berryvette

My question was not to start a debate, but to find out experiences of those who have used it. I think Mobil 1 is an excellent oil but if i am like all other corvette owners we want the best for our cars and if i can buy it and use it 3 times longer than other oils why wouldn't I. Its not about daily driving or spirited driving its about using the best product in my Z06 that's out there. AMSOIL may not make a short term difference but it could prolong engine wear and maybe your first major breakdown is at 250,000 miles instead of 150,000 miles, who knows.

C66 Racing

FYI, that test was not done by the API, but comissioned by AMSOIL, though I still find the results useful.

As for facts, a little hard to pull from opinions. I did run the AMSOIL Signature Series Synthetic 0w30 (Product Code SSOQT) in my 06 CTS-V (LS2 engine) and did used oil analysis samples with it. Here are the results:
Cadillac CTS-V Used Oil Analysis - AMSOIL 0w30
Note: The June 07 sample was M1, the rest AMSOIL 0w30. If you have not read one of these before, wear metals are aluminum, iron, copper and lead. Calcium is a detergent. TBN is the total base number of the oil and a measure of both its acidity at the end of the test (lower is worse) and its useful remaining life. Phosphorus and zinc are anti-wear additives, but phosphorus is limited in API SM/ILSAC GF-4 oils to 800 ppm.

FYI, for all, I can get you 25% off retail via the AMSOIL Preferred Customer Program. Drop me a PM for more info or exact pricing.

JMG2

I really like amsoil... for whatever reason I was burning about half a quart of oil every 1k miles or so with medium usage... I thought this was pretty normal for a sports car, but I switched to amsoil a year ago, and harly burn any oil

hotwheels57

Has anybody personally experienced an engine failure from any brand of oil, dino or synthetic? I have nothing against AMSOIL (use it in my six speed), but I'll use MOBIL 1 in the motor until GM says different. Isn't it great we have freedom to chose?

I do like AMSOIL in my bbq marinade.

C66 Racing

Unfortunately, there are many documented cases of blown engines on this forum, though largely from people who track their cars.

I lost my original stock engine running Mobil 1 20w50 way back in 03 in my first season with the SCCA (which is what prompted my shift to AMSOIL). In my case, I seized the bearings in #3,4 pistons. Probably due to insufficient bearing clearance, but I still wonder if a better oil would have prevented failure until the end of the season.

The LS3's are having a terrible time on the track and the SCCA has now allowed a dry sump for that engine. And there are many cases of the LS7s failing due to various causes, most not bearing failures.

If you search "engine failure" on this forum, you will likely find much sad reading.

killain

Like Mentioned here and in other threads, Many, many people have driven their Corvttes and other personal vehicles up to and beyong 300.000 miles using Mobil-1 synthetic. I have had nothing but excellant service from Mobil-1. I know and I respect any one elses opinion on a different motor oil. Good luck and god bless you and all of your experiences with any other motor oil. I am not a chemical engineer so I have to believe that GM and the other twenty or so automobile manufactures who use Mobil-1 as their Factory Fill, and I find it difficult to think they use it because there's not a better motor oil. But I find the idea that they were paid to use Mobil-1 ridiculous.

But to all of you who have had excellant services with Amsoil or Castrol or Pennsoil, fine, I hope your engine goes on for many thousands of miles. Hopefully you'll see many, many more good service from whatever you pour into the crankcase.

LoneStarFRC

So does that mean you don't have any factual opinion on Amsoil?

thechosenone

How do you find that ridiculous, Mobil is one of the biggest oil company's in the world, this was a great way to expand there name even more. I don't see how this is not possible. I mean seriously this is a "OIL" Company were talking about last time I checked gas and oil prices have not gone down, it always has and always be about the money. Now im not saying they outright paid them but im sure they did say hey we will give you all the oil you need to fill up your vehicles for the next 10 years if you put our logo on all your oil caps.

So I guess if what your saying is true, that if GM, Porsche, Ford ect....All say hey when we first fill up our cars with gas we use nothing but Wal-Mart Gas brand and nothing else. So dose that mean its the best out there b/c they use it and there a logo on our gas caps?

Mr.Bill

thechosenone

LOL I give up......... I was just trying to say that yes Mobil-1 is a really great oil but the best...... probably not.

ztheusa

They must think people are complete fools to believ their rigged tests like that. The only thing Amsoil will do for you is lighten your wallet.

Mr.Bill

And there you have it.

SCM_Crash

So you're saying Amsoil will give me a power to weight ratio advantage?!

Diva Toy

Many substitutes for Mobil 1. Things change with time, thus so does oil. Mobil 1 is not bad, but improvements in the industry are always raising the bar. My advice: balance cost, performance and your comfort zone and then pick your oil. Google produced the following link/list:

GM Approved Engine Oil
High Performance Engine Oil Specifications

GM4718M Registered Products
Revision Date: 1-June-2009

Product Name/ SAE Viscosity / Grades
76 Super Synthetic Motor Oil 5W-30, 10W-30
AC Delco Full Synthetic 5W-30
Castrol Edge 5W-30, 10W-30
Castrol SLX Professional 4718 5W-30
Chevron Supreme Synthetic 5W-30, 10W-30
Coastal High Performance Full Synthetic 5W-30
Kendall GT-1 Ultimate Synthetic Motor Oil 5W-30, 10W-30
Mobil 1
0W-20, 0W-30, 5W-30,
10W-30
Northland, Synergy Synthetic 5W-30
Pennzoil Platinum Full Synthetic 5W-30, 10W-30
Pinnacle National Synthetic 5W-30
Q HorsePower 5W-30, 10W-30
Service Pro Full Synthetic 5W-30
Texaco Havoline Synthetic 5W-30, 10W-30
Valvoline SynPower 5W-30, 10W-30
Warren Full Synthetic 5W-30, 10W-30

berryvette

Well guys this discussion is interesting and there are alot of opions out there, i am looking for facts about the oils comparrison by Vette Owners and the only one I have seen so far was from Subdriver. Does anyone else have any comparisons facts ( not beliefs or personal opinion) but facts based off them using different oils and camparison.

SCM_Crash

I'm on my phone right now so I don't have the link, but google "Bob the oil guy" and look at all the oil analysis records done for Amsoil and compare them with other oils. It's no longer opinions. It's science. It's a proven fact that the engine wears better with Amsoil than Mobil1. Enough tests have been performed to make an informed decision.

2KFRC5

Mobil 1 is 100% full synthetic.

http://www.mobiloil.com/USA-English/...Qs.aspx#FAQs22

SCM_Crash

LOL! It's a group 3 full synthetic... That doesn't make it a full synthetic. They're allowed to call it a full synthetic even though the base stock is still crude oil.

Supreme court ruled that group 3 oils (crude base stock with synthetic additives) is allowed to be called a full synthetic because there's such a high concentrated amount of synthetic additives. Group 2 oil (also crude oil based) is considered a blend because there isn't enough synthetics in it to be called a group 3 oil.

Note the following:
This is just double talk and tap-dancing around the question. They're basically saying it's OK to call themselves a full synthetic because "In general, fully synthetic motor oils contain non-conventional, high-performance fluids." HOWEVER, group 4 oils do not contain crude oil as their base which is why they're far more expensive than group 3 oils.

IMO, it's BS and they shouldn't be allowed to say they're full synthetic if they're really not full synthetic. Mobil1 thought the same thing before they sued Castrol for calling themselves 100% synthetic when they were in-fact just group 3 oil.

Here are the oil groups and their explanations:
http://www.pecuniary.com/faq/oil-base-stock.html

As you can see, Mobil1 is not a 100% full synthetic even though they advertise that they are.

2KFRC5

How do I know what motor oil is a Group IV (4) based PAO synthetic motor oil?
As more and more large oil companies switched their "synthetic" motor oils to the less expensive/more profitable Group III (3) base stocks it has become much easier to identify which are PAO based true synthetic. Of the large oil companies, only Mobil 1, as of this writing (12-15-2007), is still a PAO based true synthetic. The rest, including Castrol Syntec, have switched to the cheaper/more profitable Group III (3) petroleum based "synthetic" motor oil. AMSOIL Synthetic Motor Oils are PAO based true synthetic motor oils with the exception of the short oil drain XL-7500 synthetic motor oils sold at some Auto Parts Stores and Quick Oil Change Centers. This leaves more than 20 PAO based true synthetic motor oils manufactured and marketed by AMSOIL with only 4 Group III (3) based synthetic motor oils identified by the "XL-7500" product name.

http://www.upmpg.com/tech_articles/m...ity/index.html

postwhore

can anyone name all the group IV oils ?
is amsoil the only one ?