Oil Question
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,396
Likes: 2
From: North Manchester Indiana
Oil Question
GEEZ,, i HATE TO BRING UP ANOTHER OIL POST,, But, I can get a great deal on some 5-30 royal purple syn. oil
would you experts run this in place of the mobil one. ??
I can also get 10-40
would you experts run this in place of the mobil one. ??
I can also get 10-40
Race Director
Joined: Aug 2003
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From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
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I would if it meets GM4718M. Personally I stick with the factory recommend Mobil 1 5W-30.
Racer
Joined: Apr 2005
Posts: 323
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From: N. Phoenix AZ
Run the RP in your car for your regular oil change interval. When you drain it send a sample in to get an analysis on it. That should tell you not to.....I mean......wether or not you want to run it again.
Drifting
Joined: May 2001
Posts: 1,392
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From: Wabash,IN
CI 7-8-9-10 Veteran
St. Jude Donor '08
Hey wrust buy it if you dont like it stick it in my vette !! I can use it for ya ... remeber i still want to get that diff changed over .. so when/if you have time let me know ill bring the car up for ya .. jay
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Race Director
Joined: Nov 1999
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From: Greer SC
Cruise-In II Veteran
I have been running Royal Purple for 6 years, 5W30 in winter, 10W30 in summer, & Royal Purple XPR 10W40 Racing Oil at the track. My car has seen alot of very hard driving over the years. The engine is in perfect condition.
By the way, I would not use 10W40 on the street, a little too heavy.
By the way, I would not use 10W40 on the street, a little too heavy.
Last edited by Sully C5; May 8, 2008 at 11:08 PM.
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I run M1 so I don't have to buy a "Royal Purple" filler cap. 
