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Originally Posted by mustangman1992  Hello everyone ! I have a 1993 300e with the 3.2 m104 . if i shut the motor off for more than 1 hour or so and restart it i get what appears to be a timing chain slap . or at least that is what it sounds like . it goes away the second that the oil pressure builds in 1-2 seconds . i run 5w40 royal purple . the car has 155,000 miles and a perfect maintinence record . my theory is that there is a bad check valve in the oiling system causing it to drain out when the engine is shut off . any ideas ? is there a check valve in the oil filter housing ? | 5-40 weight? where are you located?
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1988 300TE, 251,000 miles
1989 300SE, 89,000 miles
2000 E320 4matic wagon, 115k miles
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