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Registered
Join Date: Sep 2004
Location: Northern Chicago suburbs
Posts: 1,399
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Milt, Charles Navarro (LN Engineering and Jake Raby (Flat Six Innovations) both feel Mobil 1 0W40 is crap (way too thin and breaks down easily).
10W40 or even 15W50 is highly recommended in flavors other than M1.
I use Royal Purple 10W40 and could care less if it's on the "approved list"...I want my engine to last. I also change my oil once a year, which for equates to about 3000 miles; but 5 to 6k miles is recommended over the extended change intervals.
Please check out both Charle's and Jake's websites for good Boxster (M96 engine) advice.
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'73 911 Frank 'n Meanie
2002 Boxster S
PCA Instructor Circa '95
Last edited by JMatta; 07-21-2009 at 11:26 AM..
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