I usually use Valvoline 10w-30 synthetic blend, but bc I have a low mileage motor I decided to try full synthetic. I noticed that a slight amount of oil now leaks from the oil drain plug. Full synthetic has a higher flow rate than conventional oil so I know that it can leak by seals. However, I didn't expect it to leak past the drain plug and I'm pretty sure I didn't strip the bolt bc I inspected the bolt and it looks good. Has anyone else switched to full syn. and had the same problem? I am hoping that switching back to synthetic blend will prevent a leak bc I'd hate to have to replace the oil pan.
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Oil Leak from Drain Plug After Switching to Full Synthetic
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