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5w30 or 10w30

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Old 12-13-2007, 09:37 PM
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Default 5w30 or 10w30
which would yall run whats the benefits of running each
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Old 12-13-2007, 10:40 PM
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I run 5w30 because that's what gm recommends for my environment.
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Old 12-13-2007, 10:49 PM
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but doesn't the manual say that 5w-30 can go in pretty much any temperature, including a hotter temperature. (Unless it is really cold where you live)
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Old 12-13-2007, 10:56 PM
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10w30 here. 5w30 is primarily for gas mileage now a days
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Old 12-13-2007, 11:20 PM
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Originally Posted by Chase22
but doesn't the manual say that 5w-30 can go in pretty much any temperature, including a hotter temperature. (Unless it is really cold where you live)
Yeah that's how I remember it. Hmm maybe 10w30 is the better way to go.
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Old 12-13-2007, 11:29 PM
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5w-30 is better for cold weather start-ups.
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Old 12-13-2007, 11:53 PM
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0w40 Mobil 1 here.
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Old 12-14-2007, 12:35 AM
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what is the main difference besides thickness of the two oils?
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Old 12-14-2007, 01:55 AM
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10-40 is good if your in the south....
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Old 12-14-2007, 03:35 AM
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Originally Posted by BigDaddyBry
0w40 Mobil 1 here.
I use the same.
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Old 12-14-2007, 04:36 AM
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10W30, I'm worried less about 1-2mpg than I am longevity of my engine.
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Old 12-14-2007, 04:40 AM
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so can someone make a list of what oil is good for what. Thanks
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Old 12-14-2007, 07:20 AM
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5w30 here...
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Old 12-14-2007, 10:44 AM
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10W30 here, because that's what it calls for.
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Old 12-14-2007, 02:39 PM
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Try THIS SEARCH.

Reader's Digest version: It doesn't matter above -5*.
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Old 12-14-2007, 02:47 PM
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I like the M1 0W40 myself.
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Old 12-14-2007, 03:09 PM
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What are the advantages to have 0W40 rather than 5W30
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Old 12-15-2007, 05:08 PM
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Originally Posted by toneloc60
10W30, I'm worried less about 1-2mpg than I am longevity of my engine.
Most 5W30s will give you better wear #s than a 10W30 of the same brand.
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Old 12-18-2007, 11:00 AM
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I have a 120000 miles on my motor so should I still run 10W40
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Old 12-18-2007, 12:24 PM
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How about GC 0W-30 (what I run) better cold start up protection yet more protection than say Mobil 1 5W-30 when hot ( closer to a 40 wt. oil)
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