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Old 10-12-2003, 05:17 PM
congonatty congonatty is offline
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Join Date: Dec 2002
Location: north carolina
Posts: 113
Best weight oil for 89 300e

Using castrol/valvoline 15x40 year round in a 1989 300e located in NC state. Owners manual shows 15x40 oil, mechanic say 20x50, what weight is mostly used by 300e owners.
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