Oil grades for hotter climates - Pontiac GTO Forum
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post #1 of 11 (permalink) Old 05-02-2007, 09:44 PM Thread Starter
 
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Oil grades for hotter climates

What is everyone running in 100-110+ heat? I live in Phoenix, it's time for an oil change and it will be getting hot very soon.
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post #2 of 11 (permalink) Old 05-03-2007, 12:58 AM
 
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Stock oil 5W-30.



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post #3 of 11 (permalink) Old 05-03-2007, 01:11 AM
 
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You could easily go with SAE 40. Im in Indiana and use 20w50 (summer driven only, tho).

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post #4 of 11 (permalink) Old 05-03-2007, 11:03 PM
 
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Mobil 1 10W-30 with Motion Plus Antifriction Oil treatment.
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post #5 of 11 (permalink) Old 05-04-2007, 07:06 AM
 
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does anyone using oils that are not recommended worry about warranty issues??? Doesn't the owner's manual state 5W30 or 10W30???
Bill

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post #6 of 11 (permalink) Old 05-04-2007, 08:39 AM
 
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The guy's that did my engine work (402 stroker, forged internals) told me to run 20w50, and my warranty is now big-time over with!
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post #7 of 11 (permalink) Old 05-04-2007, 08:46 AM
 
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I certainly understand that on built motors...just wonder why so many with "stock" motors run other than recommended...
thanks,
Bill

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post #8 of 11 (permalink) Old 05-04-2007, 12:52 PM
 
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I just run what they told me and keep oil in her and fresh and you should never have a problem, though I would like to put a oiltemp gage on her just to see how hot it gets.
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post #9 of 11 (permalink) Old 05-04-2007, 05:54 PM
 
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Quote:
Originally Posted by ls2weber View Post
I just run what they told me and keep oil in her and fresh and you should never have a problem, though I would like to put a oiltemp gage on her just to see how hot it gets.
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post #10 of 11 (permalink) Old 05-04-2007, 10:20 PM
 
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My warranty bit the dust the day I drove it off the lot.
I agree....on a stock engine...use what is recommended.
And yes, if your dealer is a putz, they could void a warranty.

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