Engine Oil - What Does Everyone Use?
Drifting
Joined: Nov 2004
Posts: 1,739
Likes: 1
From: Paris Illinois
CI 6-7-8-9-10 Veteran
St. Jude Donor '08-'09
Originally Posted by KernelDee
Whatever the manufacturer recommends on top of the oil filler cap. I figure they know better than I as to what is best for the engine, and for the C5 that would be Mobil 1 5W-30. 
It was tested and proven using this. Why risk using something else?
Melting Slicks
Joined: Jul 2005
Posts: 2,572
Likes: 3
From: Rehoboth MA . . . NRA Life Member
St. Jude Donor '06-'07
I use AMSOIL 5W40 European in all my cars. I buy it directly from AMSOIL and have it delivered right to my door. The offer a variety of products including oil filters. 
I used to purchase my oil at WalMart, cheapest, but AMSOIL, I believe, is a better blend and covers a wider driving condition range than Mobil 1.
AMSOIL 5W40
Bob
I used to purchase my oil at WalMart, cheapest, but AMSOIL, I believe, is a better blend and covers a wider driving condition range than Mobil 1.
AMSOIL 5W40
Bob
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Le Mans Master
Joined: Sep 2004
Posts: 5,118
Likes: 122
From: Madison (Huntsville) Alabama
CI 6-7-8 Veteran
St. Jude Donor '09
I use Mobil-1 5W30.
I tried Amsoil in a previous car, but it was very expensive by the time it was shipped. Couldn't really see the need.
I tried Amsoil in a previous car, but it was very expensive by the time it was shipped. Couldn't really see the need.
Burning Brakes
Joined: Sep 1999
Posts: 959
Likes: 2
From: Hartford CT
Mobil-1 when the Chevy dealer did the oil changes.
I now do drive-through oil changes and they use something else (Castrol, I think).
I do notice that the oil temperature runs about 5-10 degrees higher. Not sure this is related to the oil brand.
I now do drive-through oil changes and they use something else (Castrol, I think).
I do notice that the oil temperature runs about 5-10 degrees higher. Not sure this is related to the oil brand.
Burning Brakes
Joined: Aug 2003
Posts: 865
Likes: 19
From: NEWTON NC
Mobil 1 only so far.
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Celebrating 35 years of Corvette ownership
**I'm definitely in this for the long haul!**
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
Originally Posted by RedWolf
It was tested and proven using this. Why risk using something else?And even if it did say somewhere that GM recommends Mobil 1, that still does not mean it is the best possible choice. Mobil 1 is factory fill in many cars all around the world, and it's mainly because they are such a huge company that they can go for these big contracts much easier than a smaller oil company can.
This thread proves that good advertising can go a long way. Mobil 1 makes everyone believe that they are the best, but they really are not. It's a good oil yes, but not the number one choice by any means. There are many better oils out there (Redline, Amsoil, German Castrol and the list goes on) Spend some time on BOBISTHEOILGUY.com and you'll find out more info on oil than you'll know what to do with.
Last edited by Patman; Mar 11, 2006 at 01:43 PM.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Originally Posted by Patman
This thread proves that good advertising can go a long way. Mobil 1 makes everyone believe that they are the best, but they really are not. It's a good oil yes, but not the number one choice by any means. There are many better oils out there (Redline, Amsoil, German Castrol and the list goes on) Spend some time on BOBISTHEOILGUY.com and you'll find out more info on oil than you'll know what to do with.
For all you Mobil 1 fans, take a look at the picture of the cap above and try to find where it says GM recommends Mobil 1. Mobil 1 is factory fill... marketing at its best.
For those that have read the owner's manual, you'll see that the actual requirement is for an oil meeting GM Standard 4718M and many synthetics meet that standard.
In amplification of what Patman stated above, here is a series of used oil analysis tests done on a fellow forum member's 99 C5. The 3/11 test was German Castrol 0w30, the 5/06 and 6/24 tests were AMSOIL Series 2000 0w30, and the 10/28 report was again German Castrol 0w30. Compare the wear metal levels in this report (primarliy aluminum, iron, copper, lead) against the labs univeral average for this motor family and draw your own conclusions as to how these two oils perform.
Corvette C5 Used Oil Analysis Report
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C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
