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FWIW, I use Royal Purple 10W40 in my seven year old S with just under 16k miles. Change it once a year, which equates to 2500 to 3000 miles. I've read very good reviews for Castrol Syntec 10W40 and at half the price, would be tempted to try it.
After reading and seeing the failures on both LN and Flat Sixes' sites, there is no way I'd use Mobil 1 0W40.
To each their own...that's why there are so many different beers out there...everyone has their own tastes.
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JGM
2002 Boxster S
1973 911 Green FrankenMeanie
PCA DE Instructor circa '95
Last edited by jmatta; 07-25-2009 at 07:09 PM.
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