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Re: Oils for older vehicles and new engine break in
Posted to Castrol Forum on 7/30/2017 3 Replies

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There is no such thing as an SAE 50W or an SAE 5.

SAE 5W-50 is not one rating, it is two separate and unrelaed ratings (SAE 5W and SAE 50)

SAE 5W is based on the pumping and cranking characterist... Login to read more.

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