OIL Question
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,077
From: Guelph, Ontario
Subdriver, those wear numbers are excellent! It just goes to show that there truly are better oils out there for the LS1. Everyone assumes that just because GM puts Mobil 1 in the C5 at the factory, that it's the best choice. But it's not. My oil analysis and the one you just posted is proof! I've always been a fan of Amsoil's 0w30, it's an excellent oil that I often recommend to people who cannot find German Castrol 0w30.
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
Originally Posted by Patman
I have seen incredibly low wear numbers in my oil analysis reports with the use of German made Castrol Syntec 0w30. I've yet to see another oil analysis report from an LS1 or LS6 powered vehicle which looks as good as the reports I get. Mobil 1 5w30 just doesn't have as good of an HTHS (high temperature high stress) number as this oil does, so when you drive hard, the German Castrol is going to protect things so much better. The proof is in the reports!
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Originally Posted by Patman
Subdriver, those wear numbers are excellent! It just goes to show that there truly are better oils out there for the LS1. Everyone assumes that just because GM puts Mobil 1 in the C5 at the factory, that it's the best choice. But it's not. My oil analysis and the one you just posted is proof! I've always been a fan of Amsoil's 0w30, it's an excellent oil that I often recommend to people who cannot find German Castrol 0w30.
__________________
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Drifting
Joined: Aug 2002
Posts: 1,258
Likes: 0
From: South
Amsoil and GC are excellent oils, but for those of you who throw their money away every 3k miles you might as well use M1:
http://theoildrop.server101.com/cgi/...c;f=3;t=002372
It will hold up with no problems.
http://theoildrop.server101.com/cgi/...c;f=3;t=002372
It will hold up with no problems.
Safety Car
Joined: Sep 2001
Posts: 4,411
Likes: 1
From: Wilmington NC
Originally Posted by Patman
Subdriver, those wear numbers are excellent! It just goes to show that there truly are better oils out there for the LS1. Everyone assumes that just because GM puts Mobil 1 in the C5 at the factory, that it's the best choice. But it's not. My oil analysis and the one you just posted is proof! I've always been a fan of Amsoil's 0w30, it's an excellent oil that I often recommend to people who cannot find German Castrol 0w30.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Originally Posted by John Galt
I wonder how much Mobile pays GM to put their logo on the oil fill cap.
After watching the news tonight reporting on the GM stockholders meeting, it appears GM needs a lot more than $1 million.
Safety Car
Joined: Sep 2000
Posts: 3,572
Likes: 420
From: Taildragers rule! USA1
Originally Posted by Subdriver
I humbly disagree. If you open your owners manual and read it, you will see that GM requires an oil meeting GM Standard 4718M. All the owners manual says is that Mobil 1 meets this standard (which it does).
PATMANs oil analysis indicates there are better oils on the market. I just recently had another forum member (LS1 C5) who had been running German Castrol give AMSOIL Series 2000 0w30 a try. After running the oil for 3281 miles, he submitted the oil to Blackstone labs. The results:
PROPERTIES
ALUMINUM 2
CHROMIUM 1
IRON 6
COPPER 13
LEAD 3
TIN 1
MOLYBDENUM 4
NICKEL 0
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 38
SILICON 10
SODIUM 1
CALCIUM 2410
MAGNESIUM 795
PHOSPHORUS 1012
ZINC 1144
BARIUM 0
TBN 7.3 (was 11.9 virgin)
Vis 64.5 (SUS) (was 63.4 virgin)
Flashpoint 400
The top metals are wear products (aluminum, iron, etc). Calcium and Magnesium are detergents, Zinc and Phosphorus are anti-wear additives.
PATMANs oil analysis indicates there are better oils on the market. I just recently had another forum member (LS1 C5) who had been running German Castrol give AMSOIL Series 2000 0w30 a try. After running the oil for 3281 miles, he submitted the oil to Blackstone labs. The results:
PROPERTIES
ALUMINUM 2
CHROMIUM 1
IRON 6
COPPER 13
LEAD 3
TIN 1
MOLYBDENUM 4
NICKEL 0
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 38
SILICON 10
SODIUM 1
CALCIUM 2410
MAGNESIUM 795
PHOSPHORUS 1012
ZINC 1144
BARIUM 0
TBN 7.3 (was 11.9 virgin)
Vis 64.5 (SUS) (was 63.4 virgin)
Flashpoint 400
The top metals are wear products (aluminum, iron, etc). Calcium and Magnesium are detergents, Zinc and Phosphorus are anti-wear additives.
GM MOST CERTAINLY recommends Mobil 1, just look at your oil cap. Did you lose yours?
Why would anyone want to run a lessor oil? The lab results mean NOTHING!
Safety Car
Joined: Jun 2000
Posts: 3,537
Likes: 1
From: Costa Mesa CA
Originally Posted by ztheusa
The lab results mean NOTHING!
Safety Car
Joined: Sep 2001
Posts: 4,411
Likes: 1
From: Wilmington NC
Originally Posted by John Galt
If the lab result show that Amsoil results in lower wear, why does that mean nothing? Mobil 1 is an excellent oil, but, just because GM pushes it, that does not mean there are not better oils for your car.
I'm sorry but all the lab report says is that the oil has less metal in it. What it doesn't say is whether it's because the oil doesn't carry much material in suspension or, in fact, the oil is promoting better wear.
Pro
Joined: Feb 2004
Posts: 588
Likes: 0
From: TX
I will never run mobile 1 in any of my cars again. The weights of their oil are all off. A 10W30 is like running a 10W20. I had a slight oil consumption problem and went to a Rural Purple 10W40 problem solved…... Now my AMW catch can doesn’t catch too much my oil says in my motor 
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,077
From: Guelph, Ontario
Originally Posted by Richin Chicago
I'm sorry but all the lab report says is that the oil has less metal in it. What it doesn't say is whether it's because the oil doesn't carry much material in suspension or, in fact, the oil is promoting better wear.
Nobody else subscribes to your theory of "oil not holding wear metals in suspension"
