Application Notes:
 

ash content


is noncombustible residue of a lubricating oil or fuel, determined in accordance with test methods ASTM-D-482 and D-874 (sulfated ash). Lubricating oil detergent additives contain metallic derivatives, such as barium, calcium, and magnesium sulfonates, that are common sources of ash. Ash deposits can impair engine efficiency and power.

Also see detergent.

 

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