- Joined
- Jul 5, 2010
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- 6,687
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- Location
- Grand Rapids, MI
- My Car
- 73 Convertible
I use the oil we sell for our Kawasaki general purpose engines. It's an SL rated oil with 1200ppm zinc and phosphorous. We have both 10w30 and SAE 30 at this time. Look for it at your local Kawasaki engines dealer. When you go to an SM rated oil the zinc and phosphorous drops to below 900 ppm which is insufficient for flat tappet cams.