Dilution of engine oil

Refiners understand that gasoline will tend to cause dilution of engine oil if the 90% point is high. The 90% point distillation limits shown in TABLE 5-7 have... 

Dilution of an oil by fuel under low-temperature or short-distance stop-start operation can occur frequently. Dilution of engine oil by diesel fuel can be estimated from gas chromatography (ASTM D-3524), and gasoline dilution can also be measured by gas chromatography (ASTM D-3525). 

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