Products

About Mobil Stern Tube Lubricant

Mobil Stern Tube Lubricant is a high performance, high viscosity lubricant developed especially for the lubrication of Cedervall-type stern tube bearings used in ships and for certain bearings of ships' fin stabilizers. Mobil Stern Tube Lubricant is formulated from relatively high Viscosity Index (VI) base oils combined with emulsifiers, structure modifiers, surface active agents and corrosion preventives. It emulsifies readily with seawater to form a stable water-in-oil emulsion that is adhesive and an excellent lubricant. It provides effective rust protection in the presence of seawater and the lubricating film is resistant to water washing so that corrosion protection is maintained for extended periods under severe operating conditions.

Where the propeller shaft passes through the hull of a ship, it is supported by a bearing that is housed in the stern tube. The Cedervall type, which is a bronze or white metal bearing having an oil-tight inboard seal or stuffing box and metallic outboard seal that is not fully oil-tight, requires a lubricant that readily emulsifies with water. Mobil Stern Tube Lubricant has been formulated to meet this need. With the Cedervall type bearing a high viscosity lubricant generally is supplied to the bearing from a gravity.

Advantages and Potential Benefits:

The requirements for lubrication of these three sets of bearings in the stabilizers and stern tubes are sufficiently similar so that a single, carefully formulated lubricant can be used for all of them. To perform satisfactorily, however, the lubricant must have the correct viscosity to flow properly under gravity head without excessive rapid flow that would result in high consumption; must minimize wear under the heavy loads encountered in the bearings; must protect the bearings and other components from corrosion and must emulsify with any seawater that passes the seals in order to maintain lubricating characteristics and minimize corrosion.

In stern tube applications, consumption of the lubricant is a major concern, both from the standpoint of the cost of the lubricant and the cost of labor required to fill the tanks. In two ship trials conducted over an extended period, Mobil Stern tube Lubricant gave significantly reduced consumption compared to the previous formulation, and at least as low as the best competitive product. Throughout the tests, lubrication was entirely satisfactory. These results indicate that Mobil Stern Tube Lubricant provides effective and low cost lubrication of stern tube bearings.

1. Selected viscometrics means effective lubrication of critical stabilizer and stern tube components
2. Good emulsification properties means that the lubricant emulsifies readily to maintain lubrication in the presence of seawater
3. Excellent rust and corrosion properties helps protects critical bearing surfaces exposed to seawater
4. Multi-use capability reduces the number of lubricants required on-board
5. Good viscosity retention in severe applications aids in effective leakage control and reduced oil consumption

Applications:

1. Mobil Stern Tube Lubricant is recommended for the lubrication of Cedervall-type stern tube bearings on ships where a high viscosity, readily-emulsifying lubricant is recommended by the manufacturer.
2. It is also recommended for the lubrication of fin tilting bearings, as well as the crux trunnion bearings of Denny-Brown-AEG ship stabilizers and is approved by the manufacturer for use in these applications.

About Mobilgard 1 SHC

Mobilgard 1 SHC by ExxonMobil is a supreme performance, synthetic diesel engine oil specifically formulated to address the needs of high power, distillate fuelled diesel engines. It provides unsurpassed lubrication including long drain capability and extended engine life for today's marine diesel engines operating in severe applications.

A true SAE 40 grade lubricant, on very hot engine parts, it provides stronger lubrication film strength than most SAE 50 engine oils. At low temperatures, it flows like an SAE 20W product and thus provides outstanding start-up reliability and wear protection at extreme low temperatures as low as -54ºC.

Advantages and Potential Benefits:

1. Modern high performance, low emission, diesel engines in severe-service applications significantly increase the demands on engine lubricants. Current engine designs are tighter, reducing oil consumption and resulting in less fresh oil make-up to replenish depleted additives. Top piston rings may be located higher bringing the oil film closer to the combustion chamber where temperatures increase thermal stress on the lubricant. Higher fuel injector pressure and retarded timing improve control of exhaust emissions, but also increase engine temperatures and increase soot loads in engines operating with exhaust gas re-circulation.
2. Mobilgard 1 SHC is also environmentally friendly in that it can significantly extend oil drain intervals beyond conventional oils which reduces waste oil disposal. In addition, the formulation is designed without the use of zinc and with low chlorine levels well below the most stringent regulations in effect today.
3. Exceptional thermal and oxidation stability minimizes high temperature deposit formation, bore polish, varnish and sludge build up and extends oil drain and service periods
4. Enhanced frictional properties helps maintain effective oil film under sever operation and improves fuel economy
5. Outstanding high and low temperature performance allows a wide temperature and operating application range and offers quick start-up and immediate oil circulation at low ambient temperatures
6. Low volatility means reduced oil consumption

Applications:

Mobilgard 1 SHC is recommended for use as a crankcase lubricant in medium and high speed diesel engines in severe marine service. It is especially suited to the needs of high power concentration engines where thermal stress and loading on the lubricant are severe, as well as for applications involving low-temperature and /or frequent start-up, rapid loading following rapid start-up, and abrupt shutdown after high speed operations.

Specific applications include:

1. Military patrol vessels, high speed ferry/passenger vessels, racing boats and luxury yachts
2. Life and rescue boat engines, emergency generators, auxiliary engines
3. Marine gearing applications where FZG Level 12 is required
4. Fully compatible with conventional mineral oils and mineral oil systems
5. Can be used in confidence in engines containing silver bearing components due to non-zinc formulation

About Mobilgard 300

Mobilgard 300 by ExxonMobil is a premium quality, extra high performance system oil designed for crosshead diesel engines. High quality paraffinic base oils along with a balanced additive system provide excellent protection even for the severe operating conditions of the latest design, high-output crosshead marine diesel engines. This product has sufficient alkalinity to neutralise any strong acids which may find their way into the crankcase from the combustion of fuel sulphur, and it has enhanced load carrying ability in order to reduce wear in heavily loaded bearings.

Advantages and Potential Benefits:

Mobilgard 300 is formulated from high quality paraffinic base oils that have excellent thermal stability and oxidation resistance. These base oil characteristics are augmented with a balanced additive system that includes special high temperature oxidation inhibitors, alkaline detergents, a load carrying component and defoamant. The formulation has maximum antiwear properties, good rust protection in the presence of salt water, and excellent water separation characteristics.

1. Improved thermal and oxidation stability reduces deposits in piston cooling spaces and crankcase for better piston cooling efficiency
2. Enhanced detergency gives cleaner crankcases and circulation tanks
3. Excellent rust and corrosion properties for longer bearing life and protects critical bearing surfaces
4. Good water tolerance and separation capability allows for effective lubrication in the presence of water to longer oil life due to efficient water separation

Applications:

1. Mobilgard 300 is recommended primarily for use as system oil in late model, high-output, crosshead diesel engines, especially those engines employing the system oil for piston cooling.
2. Mobilgard 300 will prevent or reduce deposit formation in the piston cooling spaces, thus maintaining piston cooling efficiency and reducing the incidence of piston top burning and piston crown cracking.
3. Mobilgard 300 will also prevent or reduce crankcase deposits and will provide outstanding protection for heavily loaded bearings. Its reserve alkalinity allows for the burning of high sulphur fuel.
4. Good rust prevention and water separation characteristics make Mobilgard 300 an excellent system oil in older design crosshead diesel engines which have water-cooled pistons and where crankcase deposits can be a problem with lower-quality system oils.

About Mobilgard 312

Mobilgard 12 Series by ExxonMobil are high performance diesel engine oils developed for use in trunk piston engines operating on low sulphur distillate fuels in marine and industrial applications. They are formulated to have excellent resistance to oxidation and viscosity increase over a long period of service. They have superior water separating properties and provide excellent corrosion protection.

Advantages and Potential Benefits:

Mobilgard 12 Series is formulated with base oils having proven successful performance in diesel engines. The additive system is balanced to provide excellent resistance to thermal degradation under moderately severe operating conditions. They also provide good engine cleanliness and superior wear protection.

1. Excellent thermal and oxidation stability helps extend periods between inspections, overhaul and cleaning
2. Improved antiwear properties helps reduce ring and liner wear
3. Excellent TBN reserve and retention allows for increased protection against corrosive wear
4. Excellent detergency/dispersancy properties leading to increased oil service life and cleaner engines

Applications:

1. The Mobilgard 12 Series diesel engine oils are intended for use as cylinder and bearing lubricants in marine and industrial diesel engines operating on distillate fuels or light fuel blends.
2. They are particularly effective in small bore, high speed engines in fishing fleets; in new, severe service engines; and in many types of medium speed engines.
3. They may be used as crankcase lubricants in large crosshead type diesel engines operating on high sulphur fuels. Mobilgard 512 is recommended occasionally by some builders as running-in oil for crosshead type engines.

About Mobilgard 412

Mobilgard 12 Series by ExxonMobil are high performance diesel engine oils developed for use in trunk piston engines operating on low sulphur distillate fuels in marine and industrial applications. They are formulated to have excellent resistance to oxidation and viscosity increase over a long period of service. They have superior water separating properties and provide excellent corrosion protection.

Advantages and Potential Benefits:

Mobilgard 12 Series is formulated with base oils having proven successful performance in diesel engines. The additive system is balanced to provide excellent resistance to thermal degradation under moderately severe operating conditions. They also provide good engine cleanliness and superior wear protection.

1. Excellent thermal and oxidation stability helps extend periods between inspections, overhaul and cleaning
2. Improved antiwear properties helps reduce ring and liner wear
3. Excellent TBN reserve and retention allows for increased protection against corrosive wear
4. Excellent detergency/dispersancy properties leading to increased oil service life and cleaner engines

Applications:

1. The Mobilgard 12 Series diesel engine oils are intended for use as cylinder and bearing lubricants in marine and industrial diesel engines operating on distillate fuels or light fuel blends.
2. They are particularly effective in small bore, high speed engines in fishing fleets; in new, severe service engines; and in many types of medium speed engines.
3. They may be used as crankcase lubricants in large crosshead type diesel engines operating on high sulphur fuels. Mobilgard 512 is recommended occasionally by some builders as running-in oil for crosshead type engines.

About Mobilgard 450 NC

Mobilgard 450 NC (No Chlorine) engine oil by ExxonMobil is a non-zinc and non-chlorine lubricant formulated with high-quality base stocks which provide low consumption characteristics, high-temperature oxidation resistance, and thermal stability. These base stocks are combined with specially selected stable additives resulting in an engine oil with well-balanced properties.

The detergent/dispersant qualities of Mobilgard 450 NC increases filter life and engine cleanliness. Its sustained high alkalinity provides excellent corrosion protection when using fuels containing up to 1.5 percent sulphur even though metals such as steel, copper, silver and bronze are present. Mobilgard 450 NC has outstanding lubricating properties and provides the necessary protection against corrosion.

Mobilgard 450 NC exhibits superior quality in reduced wear in piston rings and cylinder liners. It possesses good water separating ability.

Advantages and Potential Benefits:

1. High thermal and oxidation stability protects against sludge formation in intermittent marine service providing cleaner, smoother running engines
2. Effective anti-wear and load carrying properties protects critical wear surfaces and extends engine life
3. High TBN and outstanding TBN retention controls deposits and neutralizes acids produced in the combustion process
4. Excellent detergency/dispersancy controls carbon deposits and varnish formation which can lead to extended oil and filter life

Applications:

1. Mobilgard 450 NC engine oil has been specifically formulated to meet requirements of heavily loaded diesel engines manufactured by EMD and used in marine applications.
2. Mobilgard 450 NC suitable for other high horsepower marine diesel engines, or higher brake mean effective pressure (BMEP) using distillate fuels with a sulphur content up to 1.5 percent.Mobilgard 450 NC will lubricate such engines in drilling rigs and stationary power generation service as well.
3. Mobilgard 450 NC has been approved by EMD and is recommended for diesel engines manufactured by Alco, Detroit Diesel (API CF-2) and Fairbanks Morse.
4. Mobilgard 450 NC engine oil meets the requirements of an SAE 40 grade marine diesel engine oil and is suitable wherever API CF and/or CF-2 performance is specified.
5. Mobilgard 450 NC has quality recognition by EMD, excellent DD6V92 TA test

About Mobilgard 570

Mobilgard™ 570 by ExxonMobil is a premium quality, extra high performance, marine diesel engine cylinder oil. The outstanding performance of Mobilgard 570 has been demonstrated at the elevated peak firing pressures and liner temperatures found in modern marine two stroke engines. It has an optimum viscosity of over 20 cSt. at 100ºC and low volatility to ensure excellent lubricant distribution and oil film retention. Through the use of unique synthetic thickener technology and a balanced formulation, the high viscosity and low volatility is attained with little or no use of bright stock which can create deposit formation due to poor thermal stability. Mobilgard 570 has demonstrated outstanding ring and liner protection and cleanliness under sustained operation with fuel sulphur levels down to 1.5%.

Advantages and Potential Benefits:

1. Excellent thermal and oxidation stability can lead to reduced deposits and sludge formation. Cleaner engines can lead to reduced component wear rates.
2. Exceptional anti-wear properties lead to potentially reduced liner and ring wear and excellent anti-scuffing control.
3. Outstanding detergency capability leads to potentially cleaner pistons and liners and can help extend periods between overhauls.

Applications:

1. Marine crosshead engines

About Mobilgard M330

Mobilgard M30 Series (M330 and M430) by ExxonMobil are premium, extra high performance 30 TBN engine oils designed for use in the most severe residual-fuelled medium-speed diesel applications found in marine and stationary power industries. These outstanding trunk piston engine oils are formulated utilizing high performance additive detergent technology and provide outstanding residual fuel compatibility characteristics for excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston undercrowns. They also demonstrate excellent high temperature oxidation and thermal stability, low volatility, and high load carrying properties and corrosion protection.

Advantages and Potential Benefits:

1. Mobilgard M30 Series oils have high performance thermal and oxidation stability. They have excellent TBN retention and resistance to viscosity increases over long operating periods. They also promote a high level of engine cleanliness with protection against wear. Compared to other medium speed engine oils, they have excellent lube/fuel compatibility and separate easily from water.
2. Excellent thermal and oxidation stability leading to reduced deposits in piston undercrown and ring belt areas
3. Improved anti-wear properties extends the life of critical wear surfaces
4. Advanced detergency/dispersancy cleans camshaft and crankcase spaces
5. Outstanding rust and corrosion properties protects wear surfaces from water and acidic corrosion
6. High residual fuel compatibility reduces sludge formation, longer oil life, cleaner engines
7. Excellent TBN reserve and retention combats fuel/combustion related corrosion and deposits

Applications:

1. Mobilgard M30 Series oils are designed to meet the needs of engines operating on heavy fuel.
2. They are recommended for use in the latest model medium speed diesel engines and are especially beneficial in engines having low crankcase oil consumption or operating with low cylinder liner temperatures.
3. Relatively high alkalinity reserves in these oils provide excellent protection in neutralising the strong acids resulting from the use of high sulphur fuels that find access to the crankcase to promote oil degradation and ring, cylinder, and bearing corrosion.

About Mobilgard M430

Mobilgard M30 Series (M330 and M430) by ExxonMobil are premium, extra high performance 30 TBN engine oils designed for use in the most severe residual-fuelled medium-speed diesel applications found in marine and stationary power industries. These outstanding trunk piston engine oils are formulated utilizing high performance additive detergent technology and provide outstanding residual fuel compatibility characteristics for excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston undercrowns. They also demonstrate excellent high temperature oxidation and thermal stability, low volatility, and high load carrying properties and corrosion protection.

Advantages and Potential Benefits:

Mobilgard M30 Series oils have high performance thermal and oxidation stability. They have excellent TBN retention and resistance to viscosity increases over long operating periods. They also promote a high level of engine cleanliness with protection against wear. Compared to other medium speed engine oils, they have excellent lube/fuel compatibility and separate easily from water.

1. Excellent thermal and oxidation stability leading to reduced deposits in piston undercrown and ring belt areas
2. Improved anti-wear properties extends the life of critical wear surfaces
3. Advanced detergency/dispersancy cleans camshaft and crankcase spaces
4. Outstanding rust and corrosion properties protects wear surfaces from water and acidic corrosion
5. High residual fuel compatibility reduces sludge formation, longer oil life, cleaner engines
6. Excellent TBN reserve and retention combats fuel/combustion related corrosion and deposits

Applications:

• Mobilgard M30 Series oils are designed to meet the needs of engines operating on heavy fuel.
• They are recommended for use in the latest model medium speed diesel engines and are especially beneficial in engines having low crankcase oil consumption or operating with low cylinder liner temperatures.
• Relatively high alkalinity reserves in these oils provide excellent protection in neutralising the strong acids resulting from the use of high sulphur fuels that find access to the crankcase to promote oil degradation and ring, cylinder, and bearing corrosion.

About Mobilgard M440

Mobilgard M440 by ExxonMobil are premium, extra high performance 40 TBN engine oils designed for use in the most severe residual-fuelled medium-speed diesel applications found in marine and stationary power industries. These outstanding trunk piston engine oils are formulated utilizing the high performance additive detergent technology and provide outstanding residual fuel compatibility characteristics for excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston undercrowns. They also demonstrate excellent high temperature oxidation and thermal stability, low volatility, and high load carrying properties and corrosion protection.

Advantages and Potential Benefits:

Mobilgard M40 Series oils have outstanding thermal and oxidation stability. They have excellent TBN retention and resistance to viscosity increases over long operating periods. They also promote a high level of engine cleanliness with protection against wear. Compared to other medium speed engine oils, they have excellent lube/fuel compatibility and separate easily from water.

1. Excellent thermal and oxidation stability leading to reduced deposits in piston undercrown and ring belt areas
2. Improved anti-wear properties extends the life of critical wear surfaces
3. Advanced detergency/dispersancy cleans camshaft and crankcase spaces
4. Outstanding rust and corrosion properties protects wear surfaces from water and acidic corrosion
5. High residual fuel compatibility reduces sludge formation, longer oil life, cleaner engines
6. Excellent TBN reserve and retention combats fuel/combustion related corrosion and deposits

Applications:

1. Mobilgard M40 Series oils can be used in most medium-speed trunk piston engine applications.
2. They are recommended for use in main propulsion and auxiliary engines on deep-sea vessels; in main propulsion engines on coastal and river ships; and in stationary power plants.
3. Mobilgard M440 is designed to meet the needs of engines operating on heavy fuel. They are recommended for use in the latest model medium speed diesel engines and are especially beneficial in engines having low crankcase oil consumption or operating with low cylinder liner temperatures.
4. Relatively high alkalinity reserves in these oils provide superior protection in neutralising the strong acids resulting from the use of high sulphur fuels that find access to the crankcase to promote oil degradation and ring, cylinder, and bearing corrosion.

About Mobilgard M50

Mobilgard M50 by ExxonMobil are premium, extra high performance 50 TBN engine oils designed for use in the most severe residual-fuelled medium-speed diesel applications found in marine and stationary power industries. These market leading trunk piston engine oils are formulated utilizing the latest in additive detergent technology and provide outstanding residual fuel compatibility characteristics for excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston undercrowns. They also demonstrate excellent high temperature oxidation and thermal stability, low volatility, and high load carrying properties and corrosion protection.

Advantages and Potential Benefits

Mobilgard M50 has industry-leading thermal and oxidation stability. It has excellent TBN retention and resistance to viscosity increases over long operating periods. It also promotes a high level of engine cleanliness with protection against wear. Compared to other medium speed engine oils, it has superior lube/fuel compatibility and separates easily from water.

1. Excellent thermal and oxidation stability helps reduce deposits in piston undercrown and ring belt areas
2. Improved anti-wear properties extends the life of critical wear surfaces
3. Advanced detergency/dispersancy helps clean camshaft and crankcase spaces
4. Outstanding rust and corrosion properties helps protect wear surfaces from water and acidic corrosion
5. High Residual Fuel Compatibility reduces sludge formation, longer oil life, cleaner engines
6. Excellent TBN reserve and retention helps combats fuel/combustion related corrosion and deposits

Applications:

1. Mobilgard M50 oil can be used in most medium-speed trunk piston engine applications.
2. Mobilgard M50 is recommended for use in main propulsion and auxiliary engines on deep-sea vessels; in main propulsion engines on coastal and river ships; and in stationary power plants.
3. Mobilgard M50 oil is designed to meet the needs of engines operating on heavy fuel. It is recommended for use in the latest model medium speed diesel engines and is especially beneficial in engines having low crankcase oil consumption or operating with low cylinder liner temperatures.
4. In these engines, oil life and drain intervals have been significantly reduced when using conventional lube oils due to severe TBN depletion resulting from very low lube oil consumption.
5. Relatively high alkalinity reserves in this oil provide superior protection in neutralising the strong acids resulting from the use of high sulphur fuels that find access to the crankcase to promote oil degradation and ring, cylinder, and bearing corrosion.