lovin Lukas oil

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Originally Posted by '72customdeluxe

Yep, recent ones are hard to find (why I posted a uoa) but royal purple street oil is no better than any other sm oil for cams. Rotella isn't great anymore, but i'm not paying so much either

RP doesn't display the API "starburst" but does claim to be an API "licensed" oil. NO SM certified oil has enough ZDDP for flat-tappet cams. Note that API/ILSAC only covers SAE 0W-20, SAE 5W-20, SAE 0W-30, SAE 5W-30 and SAE 10W-30 -so any other grade is exempt from the limits.

Rotellta as an ILSAC CJ-4 oil is limited to a maximum of 1200 ppm phosphorus, and typically tests lower.

I'll drop off this thread and post the analysis on the oil sticky