stangman638
Well-Known Member
- Thread starter
- #1
Taken my car to dealer a few times, first oil change ever I found it odd my invoice said customer requests 10 quarts of oil, when the manual clearly states 10 qts. Fast forward a few oil changes later, some of which I had taken to a private shop to do.
Last weekend, after an oil change at dealer, I noticed oil pressure was significantly higher at idle, I didn't grab my invoice so I couldnt verify the oil used, but the manual clearly states 5w-20. Had the general tick that follows an oil change, but this tick was a little different, and it wouldnt go away after driving hard at high RPM. Yesterday, get my invoice in the mail that details out what was done, and saw they used 5w50.
Why do I think thats bad for a tuned only vehicle? 5-50 gets thin at 225 degrees, my cyclinder head temp hovers around 195-200, the pressure relief valves kicks in faster with this heavy ass oil, cutting down the flow rate to boot.
Had to take the car back today, service advisor, thought I was wrong until he checked the computer and was baffled how it happened they did a free 5-20 change while I watched. Make sure you guys pay attention to what the dealer is putting in. Too thin a oil increases wear, as can to thick an oil. For a daily driver that is not at the track, it's way to heavy an oil.
Last weekend, after an oil change at dealer, I noticed oil pressure was significantly higher at idle, I didn't grab my invoice so I couldnt verify the oil used, but the manual clearly states 5w-20. Had the general tick that follows an oil change, but this tick was a little different, and it wouldnt go away after driving hard at high RPM. Yesterday, get my invoice in the mail that details out what was done, and saw they used 5w50.
Why do I think thats bad for a tuned only vehicle? 5-50 gets thin at 225 degrees, my cyclinder head temp hovers around 195-200, the pressure relief valves kicks in faster with this heavy ass oil, cutting down the flow rate to boot.
Had to take the car back today, service advisor, thought I was wrong until he checked the computer and was baffled how it happened they did a free 5-20 change while I watched. Make sure you guys pay attention to what the dealer is putting in. Too thin a oil increases wear, as can to thick an oil. For a daily driver that is not at the track, it's way to heavy an oil.
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