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Old 06-23-2003, 04:20 AM
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Mobile1 Synthetic
Hey folks, I just changed over to Mobile1 Synthetic 15w50 in the ol' 3rdgen. It's got about 113k miles on it now. Everything seems to be fine, but a few people said I should have stayed with dino oil b/c of the miles on it. What do u guys think?
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Old 06-23-2003, 09:35 AM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I think you made a good choice. Unless you have any major oil leaks you'll be fine.
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Old 06-23-2003, 04:15 PM
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Car: 1990 RS
Engine: 350
Transmission: TH-350
mobil 1 is the only oil i will use. 5w-30
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Old 06-23-2003, 05:02 PM
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Thats the only oil I use 155,000 miles no problems
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Old 06-23-2003, 06:18 PM
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Car: Met. Silver 85 IROC/Sold
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140. No problems.

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Old 06-23-2003, 08:47 PM
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180k and no probs.
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Old 06-23-2003, 11:49 PM
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Mobil 1 5w30, 99k and runing great. Oil pressure actually increased ever so slightly over pennzoil 5w30.
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Old 06-24-2003, 04:20 AM
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I would go back to 5W-30 from the 15W-50 though. Thats pretty heavy even in summer time, doesn't flow the same (very slow when cold) and actually robs some power to simply pumping the oil.
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