Mobil 1 vs Royal Purple
Thread Starter
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
Mobil 1 vs Royal Purple
I just wanted to mention that I shipped off both samples of 5w-30 oil to Blackstone Labs .. It took me a year to put on 8000 miles... 4000 of those miles were on Mobil 1 and the other 4000 miles were done on Royal Purple. The DIC showed 30% oil life remaining in both cases.. I wanted the samples to be as close to identical as possible.Blackstone Labs will do a full blown analysis and send me the results of both oil samples.. I will post as soon as I get them
Tech Contributor
Joined: Jan 2007
Posts: 19,338
Likes: 1,119
From: Dyer, IN
I just wanted to mention that I shipped off both samples of 5w-30 oil to Blackstone Labs .. It took me a year to put on 8000 miles... 4000 of those miles were on Mobil 1 and the other 4000 miles were done on Royal Purple. The DIC showed 30% oil life remaining in both cases.. I wanted the samples to be as close to identical as possible.Blackstone Labs will do a full blown analysis and send me the results of both oil samples.. I will post as soon as I get them
Racer
Joined: Jan 2011
Posts: 371
Likes: 1
From: Windsor Ontario
I used royal purple once, cost me $100 after tax for a damn oil change (8 liters in my Deep pan LT1)
Biggest waste in my opinion. I usually do oil changes in my summer cars every 3000KM so I always used rotella T in all my built motors.
Also I dumped the royal purple after 200miles.
Jay
Biggest waste in my opinion. I usually do oil changes in my summer cars every 3000KM so I always used rotella T in all my built motors.
Also I dumped the royal purple after 200miles.
Jay
Thread Starter
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
I just thought it would be interesting to some of the members to see the real results... There are hundreds of threads on motor oil.. I really don't think there is much of a difference in any modern day full synthetic oil... The prices are another story.. Is it worth another $3.00 or more for a Quart ??? I put in Valvoline Racing full synthetic today and will do another comparison with Castrol Edge.. Wix Filters always.. Call me crazy and puke if you want to Lucky.. I'm not mad at you.. Just spending a few dollars on something that interests me.. and maybe a few others... Next comparison wiil be Prestone antifreeze vs. Auto Zone antifreeze.. and then I'll do Motul Brake Fluid vs. STP Brake fluid
I'm up for suggestions on windshield washer fluids
Last edited by David426; Apr 4, 2011 at 08:22 PM.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
I think a full scientific evaluation of the top 20 air fresheners is in order. Are the Blue trees really better than the original green ones?
Inquiring minds want to know...
BTW: I will be watching for the oil results...thanks.
Inquiring minds want to know...
BTW: I will be watching for the oil results...thanks.
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Le Mans Master
Joined: Jan 2002
Posts: 7,460
Likes: 5
From: Burnet, TX
I just thought it would be interesting to some of the members to see the real results... There are hundreds of threads on motor oil.. I really don't think there is much of a difference in any modern day full synthetic oil... The prices are another story.. Is it worth another $3.00 or more for a Quart ??? I put in Valvoline Racing full synthetic today and will do another comparison with Castrol Edge.. Wix Filters always.. Call me crazy and puke if you want to Lucky.. I'm not mad at you.. Just spending a few dollars on something that interests me.. and maybe a few others... Next comparison wiil be Prestone antifreeze vs. Auto Zone antifreeze.. and then I'll do Motul Brake Fluid vs. STP Brake fluid I'm up for suggestions on windshield washer fluids
Instructor
Joined: Jun 2015
Posts: 208
Likes: 40
From: Las Vegas NV
I just wanted to mention that I shipped off both samples of 5w-30 oil to Blackstone Labs .. It took me a year to put on 8000 miles... 4000 of those miles were on Mobil 1 and the other 4000 miles were done on Royal Purple. The DIC showed 30% oil life remaining in both cases.. I wanted the samples to be as close to identical as possible.Blackstone Labs will do a full blown analysis and send me the results of both oil samples.. I will post as soon as I get them
I see that you were trying to keep the samples as similar as possible.
-Is your C7 a daily driver or only when you get the urge?
-Did you have any exaggerated weather during one period or the other?
-Is your C7 a dry sump or wet?
I am a big fan of Royal Purple and use it in other race engines i have. If there is a big difference I am willing to spend the money. My concern is Chevy has directed Mobil 1 for the 2015 Z51. I don't want to violate the warranty.
Having rebuilt a few engines that were only run on Royal Purple you can really tell the difference inside the valve covers, and in the lower end. Piston and crank wear were minor. On the other side of the discussion is Lucas Oil. I have not been happy with it in the past. It turned to ash in the engine and left sludge after one track day (about 300 miles of hard driving).
Thanks again for putting up a thread based off scientific research vs the fluffy stuff the guys giving you grief earlier in the thread are looking
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
Damn, I hate when stuff like this happens. Members that start threads and never bother to give results or close them off. I've already made my mind up about boutique oils but it would've been nice to see actual results.
Racer
Joined: Jul 2015
Posts: 296
Likes: 6
From: Valencia CA
I think these are the results. I found them on another post but it's the same person.
https://www.corvetteforum.com/forums...al-purple.html
https://www.corvetteforum.com/forums...al-purple.html
Safety Car
Joined: Dec 2009
Posts: 4,360
Likes: 429
From: Birmingham Al
I read a few years back Mobile 1 is a longer life oil I'll keep using it and that's up with these people that got weird stuff to say when somebody is try to say something about whatever .There are people out there that think this forum is there's and only there's .Who cares what someone got to say if you don't like it JUST MOVE ON don't have to get all weird about it ..Oil , Corvettes good oil bad oil it's all good ..Sorry I just don't get the fact that there are people the want restrict what other Corvette owner have to say .It's a forum look it up..
Racer
Joined: Jul 2015
Posts: 296
Likes: 6
From: Valencia CA
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Personally, I would stick with the "High Mileage" version of Mobil-1. It doesn't meet the latest standard where the EPA required reduction of certain additives and it is closer to the Mobil-1 that was in production at the time our cars were built.