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Mercedes and VW
Why is it that Mercedes, Peugeot and Volkswagen recommend using 10W40, 15W50, 20W50 oil and not using 5W30 and 10W30,
but Everybody else, including BMW, all the japanese cars, etc recommend using the opposite. They never recommend putting such a heavy oil in.
I started using 15W50 in the mercedes and this still bugs me. I always thought heavier oils are bad for startup and make the engine sluggish. I really really want to put 5W30 in the mercedes but everyone tells me it is not recommended for this car but nobody can give me an explanation why.
1991 500SL
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01-21-2004, 03:50 AM
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