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Re: What does the 'W' mean?
Posted to Technical Discussion Forum on 2/12/2006 12 Replies

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SAE 10W and SAE 10 are two completelt different ratings. There is no such thing as a 30W and I don't think there ever was (can't say for sure). I'm pretty sure that OEM TSB was am example of myth buil... Login to read more.

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