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Old 11-27-2001, 12:13 PM
rbauman rbauman is offline
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Join Date: May 2000
Location: Boise, Idaho
Posts: 80
Oil Leaks with synthetic oils?

Older engines which didn't receive close attention to oil change intervals often have a varnishing/crud material on the interior of the gaskets and seals of engines, transmissions and etc. If one then changes to synthetics, the detergent action will clean the varnishing/crud off the seals and two situations can occur; 1. after minor leaking, the swelling additive in the synthetic will reseal a good gasket and you're good. 2. After leaking, the synthetic oil will continue to leak thru damaged seals and gaskets and you have a problem. It's your call on this! Roger (edited 11282001)
1983 300CD 246k sold
1998 C230 52k
1980 450SL 75k needs AC
1999 Subaru Outback Ltd 43k

Last edited by rbauman; 11-28-2001 at 11:00 AM.
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