Reply to "5w20 vs 5w30"

ctsvloverMember

I've owned corvettes in the past and I now own a Caddie CTS_V. ALL these high performance cars recommend the higher octane. My dad was a mechanic for 30 years and his advice was: If you are driving around town, get the lowest octane. If you are racing, or showing off the 560 HP engine, get the high octane. Or another way to look at it. If its not Pinging at 85 octane (lowest in CO), then your fine. If it's pinging, go higer.

8/31/104:29 PM

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