Thread: Best Engine Oil
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Old 07-31-2000, 02:38 PM
420SEL 420SEL is offline
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Join Date: Jul 2000
Location: Toronto, CANADA
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What is the best oil to use in a 1986 420SEL? (180,000 miles) 50/50 combination city-highway driving, no hard driving and oil and filter changed monthly. I am currently using Castrol GTX 5W-30 on the advice of my mechanic. He said that many of the car he has worked on needed the cams replaced too often until they started using 5W-30 oil, after which the cams lasted much longer.

Jason Priest
1986 420SEL
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