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Re: When is 0W-30 thicker than 10W-40
Posted to Technical Discussion Forum on 4/11/2007 1 Reply

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Yes! But only if the SAE 0W-30 is an ACEA A3 type (which the Castrol Syntec 0W-30 is but many are not) and the SAE 10W-40 is not (as in most 10W-40 products).

SAE 0W-30, 5W-30, 10W-30, 0W-40, 5W-40,... Login to read more.

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