The effect of methanol gasoline to engine oil

In order to study the engine oil performance when methanol gasoline is used, simulation and road test were proposed. In simulation case, oil sample was dubbed by methanol gasoline and combustion products formic acid and formaldehyde and analysis was of sample oil of detergent-dispersant performance, antiwear performance, oxidation performance and low temperature performance. The test result indicates that the detergent-dispersant performance, antiwear performance, oxidation performance and low temperature performance were effect negatively. The methanol gasoline with medium ingredient methanol has more significant influence. Road test result shows that gasoline oil got worse quickly, and periods of oil change got shorter using the methanol gasoline with 15% methanol. The integrated analysis indicated that methanol gasoline has great negative impact on engine oil.