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- #16
Thanks - I’m SP also.If the SAE spec is SC, SD, SF, SH, SJ .... it's definitely too old. Though I can't recall what is the latest and greatest, last I checked it was SM but that could have been between 3 and 10 years ago.
ETA:Well the bottle of QS I bought last year has SP on it, so it's at least got up to there.
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