What Causes Diesel to Enter the Oil Pan in a Diesel Engine?

1 Answers
ConnorRose
07/29/25 8:43am
Here are the specific reasons for diesel entering the oil pan in a diesel engine: 1. Incorrect oil viscosity: Oil leakage occurring right after an oil change is often due to the newly replaced oil being too thin and not meeting the original vehicle's standard specifications, leading to oil leakage from the engine oil pan. 2. Overfilling of oil: If the engine oil pan and other components are normal but oil leakage still occurs, it is mostly due to overfilling of oil. 3. Loose drain plug: Frequently driving on rough road conditions can cause this issue, and it is advisable to replace the drain plug gasket regularly according to the maintenance cycle. 4. Aging gasket: Local oil leakage from the oil pan gasket is caused by aging or poor-quality gaskets, requiring replacement of the oil pan gasket or sealing the leakage point with adhesive.
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