...Or maybe the the high-ups at GM have stock in Mobil... :jester :lol:

:cheers:

 

Mobile 1 is a no-brainer excellent insurance policy for a hi-performance engine...Why would anyone nickel and dime theyre oil??? :crazy:

 

Warrenty issues aside, I use M1 (or any other name brand full synthetic) in my Z-28 because I put 20K+ miles on my car annually. So, I'm changing out my oil every 7500 miles (~4 times per year). If you are doubling the oil change rate with regular oil over synthetic, then your cost difference isn't that much, and now you've got twice the work.

Have a good one,
Mike

 

It was my brother's car but you're right it could have been an option. I was just stating that M1 is not the say all end all in GM's opinion if it's allowing another type of synthetic oil to be used in their LS1 engine.

 

Here's a reply from RP regarding my e-mail below:
Levi,
Royal Purple SAE 5w30 and SAE 10w30 motor oils exceed performance of API SJ, GM4718M and ECII Energy Conserving requirements.
Royal Purple motor oils are formulated with a degree of mineral base oils however they are primarily Group IV PAO (synthetic) based. You will not find a product on the market that is not formulated with a degree of Group III (mineral) or lower base oils (read the fine print on any bottle labeled 100% such as Mobil 1). Mineral base oils are used as diluent or carrier oils for solubility of the additive packages in the synthetic base stock as synthetic base oils in general possess poor additive solubility. As well, there are no industry standard definitions of full, blend, 100%, etc. and thanks to one major oil manufacturer what was once known as mineral base oil is now ( as ruled by the FTC) being legally referred to as "synthetic". Bottom line here, forget the labels, these are simply good/ better/ best marketing techniques developed by major oil manufacturers knowing the general public has no means by which to gauge high end oils (apparently our marketing dept. is guilty too). Thus consumers are directed into thinking a higher synthetic content automatically equates to greater protection/ performance. Unfortunately, it is not as simple as these marketing geniuses would have you believe, there is much more to the finished product than base oil. A well formulated mineral oil may very well outperform a poorly formulated synthetic.
Focus on performance. While synthetic base oils do offer significant benefits, additive technology plays the largest role in overall performance. Royal Purple does not simply rely on base oils for performance and/ or protection. The defining factor bwtween Royal Purple and other synthetics is our non-corrosive Synerlec high film strength additive technology. Synerlec is the foundation of Royal Purple automotive and industrial lubricants offering a film strength typically found to be 3 to 5 times that of other oils, regardless of base oil. This film strength equates to the benefits RP users repeatedly see simply due to less friction.
I have included the API specs/ certifications for Royal Purple SAE 5w30. For additional information the full product/ spec sheet can be viewed at http://www.royalpurple.com/pd/6.html.

Thank you for your interest,

Jared Martin
Royal Purple Ltd.

SAE GRADE SAE
Viscosity, cSt @ 40°C 62.5
cSt @ 100°C 10.5
Viscosity Index 160
Pour Point, °F -44
Flash Point, °F 395
Fire Point, °F 435
Total Base No.
(Detergent Alkalinity) 10.5
API Service Classification SJ/CH-4
GM 4718M





-----Original Message-----
From: Levi Procter [mailto:ominousvette@home.com]
Sent: Wednesday, January 09, 2002 10:15 PM
To: jaredm@royalpurple.com
Subject: Your 5W/30 Synthetic Oil?


Is your 5W30 synthetic motor oil 100% synthetic? I ask this because I am a 2000 Corvette Owner and we are mandated by our warranty to use Mobile 1 or an equivalent synthetic oil that meets or exceeds GM's specs. Your bottle does show that it meets the "starburst" specs that GM requires in our LS1 engines. Do you have proof that your motor oil is 100 % synthetic (your FAQ says it isn't, unless you get the racing RP) and that it does meet and/or exceed the Chevrolet Corvette LS1 engine requirements.

 

Jud is right. GM went to Mobil 1 in '92 when they eliminated the oil cooler from the Corvette. They found that synthetics hold up much better to high heat conditions than conventional oils and their market research indicated that many Vette owners are weekend racers.

 

Because it says "Mobil 1" on the oil cap. :D :jester

 

Any oil that meets the spec GM4718M or gf-2 is ok to use per owners mamual.

 

I think the oil companies bid on the various cars to have their oil used and the "recomended" oil.

:cheers: I would not have it any other way, America at work!

 

I have used m1 5w-30 in my vehicles since '94 and both are holding up well.
The '94 ranger has 100k plus with two teenagers operating it 50% of the time
and the engine is still quiet and has plenty of pep. The other issue of cost just
doesn't make sense. You can run longer between oil changes- as much as 3 times longer. So how is it more costly? I just bought 2000 coupe and the
dealer words to me were-" Change oil every 15000 or once a year and use only
m1-5w-30". He's been selling Vettes for 30 plus years. I'm 51 and old enough to remember when m1 came out and they boasted that it would "last" 25,000
miles between oil changes- But you won't see it anywhere now because they would sell less.

Regard, Tom :)

 

chrislee2: ExxonMobil is still producing the MOBIL 1 as it has been. There has been on change by the merger to the oil. The MOBIL logo will be around for a while yet (not for ever). MOBIL 1 is still made at the old MOBIL refinery(ExxonMobil refinery)

 

That's good to know since I'm still using it. Although it makes you wonder why it started getting cheaper. Part of the rumor I heard was that the new owners reformulated M1 to cut costs. Royal Purple or Amsoil is looking better and better every day.

 

If your not going to keep the car forever, don't waste the money.