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Royal Purple: B.S or not?
I just wanted to know if anyone has used Royal Purple motor oil, and if its any good. I know we have to use M1 0w40, which is what I have now, but Royal Purple claims hp gain with theirs. Is this true or just another gimic?
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2001 Boxster S
Gemballa front bumper/Aerokit I Sideskirts/H&R suspension/997 short shift/Schnell front&rear strut brace/Aluminum pedals and floor board//Traffic pro/Console Delete//LED exterior lighting//Exclusive Options Full Leather/19inch Ruf Wheels/European rear bumper with 550 mesh/Zientec spoiler/IPD Plenum//Cold Air Intake/Hardtop/Speedster Humps
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