Royal Purple or Mobil 1? - Pontiac GTO Forum
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post #1 of 29 (permalink) Old 01-29-2006, 06:12 AM Thread Starter
 
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Royal Purple or Mobil 1?

Which is better? Does anyone here use Royal Purple?
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post #2 of 29 (permalink) Old 01-29-2006, 06:39 AM
 
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I use RP exclusively, even in the lawnmower!! Being in SD, go for the Racing 21 or 11.
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post #3 of 29 (permalink) Old 01-29-2006, 09:43 AM
 
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I use RP in my race car and Mobile 1 in my Goat... Don't notice any difference but the price!
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post #4 of 29 (permalink) Old 01-29-2006, 01:45 PM
 
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Both are just about the same. I used RP and Mobil 1 in my race car also. No noticeable difference. I use Mobil 1 in the Goat just in case there are any engine problems. This way dealer doesn't have a crutch to lean on and deny any warranty claims.
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post #5 of 29 (permalink) Old 01-29-2006, 01:54 PM
 
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If you use Mobile 1, make sure its 0W-40. I've read Mobile 1 thins out over time to be a 30W oil equivalent. I've used them both but went back to Mobile 1 so I had one less brand of oil in the garage (I've got 6 cars). Its a bit easier to find when you need more.

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post #6 of 29 (permalink) Old 01-29-2006, 02:01 PM
 
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Read this....may help with questions regarding Mobil 1
http://neptune.spacebears.com/cars/stories/mobil1.html
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post #7 of 29 (permalink) Old 01-29-2006, 03:03 PM
 
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Mobile 1 only.........used it for years. Official oil for NASCAR.....

JET

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post #8 of 29 (permalink) Old 01-29-2006, 06:21 PM
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JET.....maybe you should try Mobil1.
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post #9 of 29 (permalink) Old 01-29-2006, 06:54 PM
 
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Quote:
Originally Posted by Xman
If you use Mobile 1, make sure its 0W-40. I've read Mobile 1 thins out over time to be a 30W oil equivalent. I've used them both but went back to Mobile 1 so I had one less brand of oil in the garage (I've got 6 cars). Its a bit easier to find when you need more.

where did you read this?
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post #10 of 29 (permalink) Old 01-29-2006, 09:05 PM
 
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Mobil 1 in the engine -- RP and other syns in the transmission, rearend and brakes. I change it every 6K -- and the stuff's still gold in color. Amazing stuff.
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