Mobilgard™ ADL Series engine oils

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Data sheets

Deep Sea Shipping Industry
Enhanced Wear Protection

Product information

Technical resources

Features and Benefits

Mobilgard ADL Series oils have demonstrated superior performance in the latest model diesel engines, including engines of MAN BandW Alpha, Caterpillar (3600 Series), Deutz, and Wartsila. In extensive field testing on these engines, Mobilgard ADL Series oils corrected many problems normally associated with severe service engines operating on lower quality fuels. Results included dramatically reduced oil consumption , significantly reduced liner lacquering and extended periods between overhauls. These advanced diesel lubricants possess excellent water separation, rust and corrosion resistance properties.

Features Advantages and Potential Benefits
Increased thermal and oxidation stability Improved engine cleanliness, reduced liner lacquering, reduced top deck sludge, reduced piston ring groove deposits and bore polishing
Superior wear protection Extends the life of critical wear surfaces
Enhanced detergency/dispersancy capability Reduced deposits especially in the ring belt area which leads to extended cylinder overhauls and reduced oil consumption
Stay-in-grade shear stability Reduced oil consumption and improved bearing protection
High TBN levels Prevents corrosive wear due to higher sulphur fuels
Broad range of engine applications One severe service engine lubricant for all shipboard applications


Mobilgard ADL Series lubricants are intended for use in high BMEP engines and in severe duty engine applications where the nature of the fuel and service requires a greater level of detergency/dispersancy and liner lacquer control than is offered by most diesel engine lubricants.

Specifications and Approvals

Mobilgard ADL 30 ADL 40
Recommended by ExxonMobil for use in applications requiring API CF X X
Meets the requirements of many major medium-speed marine diesel engine builders X X
GE 250MDA/B (V or L)


Typical Properties

ADL 30 ADL 40
SAE Grade 30 40
Specific Gravity at 15ºC 0.889 0.892
Flash Point, ºC, ASTM D 92 230 239
Pour Point, ºC, ASTM D 97 -30 -21
Viscosity, ASTM D 445

cSt, at 40ºC 90 132
cSt, at 100ºC 11.5 14.7
Viscosity Index, ASTM D 2270 117 112
TBN, mg KOH/g, ASTM D 2896 12 12
Sulphated Ash, wt%, ASTM D 874 1.4 1.4
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