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Castrol Tection 15-40, OK for Gas?
I purchased a '92 500SL w/44k this spring which was serviced by dealer who used Pennz 15-40. I was looking at oils and most 15-40 are primarily for diesels. Will I compromise this engine by using a "Diesel" oil? It does have an SL rating. Thanks
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My evolution with Benz's
'77 240D
'87 420SEL
'90 300CE
'92 500SL 43k
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