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Whats the best viscosity of MobilOne oil to use in the summer?

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Old 06-16-2005, 09:06 AM
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Default Whats the best viscosity of MobilOne oil to use in the summer?
Would Mobil 1 Racing 0W-30 Oil for High Performance Engines be a good choice for a chipped 1.8Ts?
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Old 06-16-2005, 12:38 PM
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where are you located? How hot are the summers in your area?
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Old 06-16-2005, 12:45 PM
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0w-40 is the one that meets the specs and is just fine for summer. 5k mile changes.
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Old 06-17-2005, 04:10 AM
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Connecticut.
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Old 06-17-2005, 07:33 AM
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Default If I could find Mobil 1 10w-40 EP I'd be ALL OVER IT.*15,000 Mile Performance Guarantee* I run 5w-40
<center><img src="http://pictureposter.audiworld.com/27563/visc2.jpg"></center><p>
Most 30 weights are quite thin. Now Mobil 1 EP 30 weights are a bit thicker. 10w-30 EP would be ok. 5w-40 SUV oil is another formula, not SuperSyn PAO, but an ester based formulation. I'm actually doing 2 shorter OCIs of it this summer for desludging, the esters work way beter than PAO which has solubility issues. In a turbo, it's good in summer and winter.
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Old 06-17-2005, 07:35 AM
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In a turbo, it shears out-of-grade to a 30 weight, not exactly best in summer.
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Old 06-17-2005, 10:05 AM
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Not at the recommended 5K changes it wont. Holds up at least as well as GC 30 weight.
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Old 06-17-2005, 01:57 PM
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Then just wait for oxidative thickening.He asked for "best"not"lamest" ;0) It shears below GC, btw.
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Old 06-17-2005, 03:22 PM
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Default Shows M1 did not shear below GC at all...
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Old 06-17-2005, 04:45 PM
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Default It sheared *more* & started w/ the same HT/HS visc. Where do you think HT/HS is at after shear?
Lower in that thread:

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posted April 24, 2004 07:03 PM
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I had much less iron wear than this after 9500 miles of running the Amsoil 10w-30....(TT225)

With a 30 weight.
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