Cruisers & Sailing Forums - View Single Post - oil filters and by-pass valve question

Alan Wheeler · 22-08-2007, 13:57

Unless you totaly pull the engine apart and parts wash each component, the oil will turn black imediatly as soon as it has mixed with old residue around the engine. That is normal and you won't solve the issue. The difference with Diesel oil from Gasoline engie oil is that it has a high detergent level in it, to do eactly that. Wash the Carbon from the engine parts and hold those carbon particles in a state of suspension. If the oil does not turn black quickly, you have a problem because the oil is not doing the job.
Use a good quality oil and good quality filter and change every 100hrs. Sooner is good practice, but not essential, providing you use top qualtiy disposibles.

22-08-2007, 13:57	#10
Alan Wheeler Registered User Join Date: Dec 2003 Location: Marlborough Sounds. New Zealand Boat: Hartley Tahitian 45ft. Leisure Lady Posts: 8,042	Unless you totaly pull the engine apart and parts wash each component, the oil will turn black imediatly as soon as it has mixed with old residue around the engine. That is normal and you won't solve the issue. The difference with Diesel oil from Gasoline engie oil is that it has a high detergent level in it, to do eactly that. Wash the Carbon from the engine parts and hold those carbon particles in a state of suspension. If the oil does not turn black quickly, you have a problem because the oil is not doing the job. Use a good quality oil and good quality filter and change every 100hrs. Sooner is good practice, but not essential, providing you use top qualtiy disposibles. __________________ Wheels For God so loved the world..........He didn't send a committee.