Oil recommendation
Le Mans Master
Joined: Feb 2002
Posts: 6,937
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From: Waldorf MD
Synthetic oil was specified so no oil cooler was necessary (probably other reasons also). The LS1 has some small oil passages and synthetic flows better.
I use Mobil 1 synthetic in all my 5 vehicles. Excellant wear protection, better mileage, and excellant low temperature flow.
If you have a $45,000+ Corvette and they specify synthetic oil, why wouldn't you use it ? (sorry but I really don't understand your question).
I use Mobil 1 synthetic in all my 5 vehicles. Excellant wear protection, better mileage, and excellant low temperature flow.
If you have a $45,000+ Corvette and they specify synthetic oil, why wouldn't you use it ? (sorry but I really don't understand your question).
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Pro
Joined: Dec 2004
Posts: 534
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From: New Brunswick
Well... my 98 isnt $45000... plus I just got it... first oil change.
It was a valid question
Thanks for the tip...synthetic it is...
Denis
It was a valid question
Thanks for the tip...synthetic it is...
Denis
Last edited by sirsenna; Feb 4, 2005 at 05:25 PM.
Team Owner
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From: At the beach in little Rhody
See you are in NB. Look around for some Castrol 0W-30, Made in Germany. Excellent oil and readily available in Canada. I have had excellent results with it as have many others. Check out this link for some good oil information. 
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From: King George VA
Originally Posted by sirsenna
Do C5s absolutely need synthetic? Or can I run standard 5W-30?
Denis
Denis
"Your vehicle's engine requires a special oil meeting GM Standard GM4718M. Oils meeting this standard may be identified as synthetic. However, not all synthetic oils will meet this GM standard. You should look for and use only an oil that mees GM Standard GM4718M."
AMSOIL markets several grades of oils that meet GM Spec 4718M:
AMSOIL Series 2000 Synthetic 0w30
AMSOIL SAE Synthetic 5w30
AMSOIL XL-7500 Synthetic 5w30
As a note, I picked up a bottle of the "German" Castrol mentioned above, and while I have no doubt that it is a good oil based on test results I've seen, the bottle doesn't list GM Spec 4718M on it, nor does Castrol's product data sheet on their website.
P.S. AMSOIL sales vial the link in my sig or to the left benefit my Corvette race team and this website. Thanks.
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Last edited by C66 Racing; Feb 4, 2005 at 06:46 PM.
Safety Car
Joined: Mar 2002
Posts: 3,780
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From: Southwest MI
Originally Posted by vettenuts
See you are in NB. Look around for some Castrol 0W-30, Made in Germany. Excellent oil and readily available in Canada. I have had excellent results with it as have many others. Check out this link for some good oil information.
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Drifting
Joined: Jul 2001
Posts: 1,418
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Originally Posted by sirsenna
Well... my 98 isnt $45000... plus I just got it... first oil change.
It was a valid question
Thanks for the tip...synthetic it is...
Denis
It was a valid question
Thanks for the tip...synthetic it is...
Denis
http://www.mobiloil.com/USA-English/...rformance.aspx
The Mobil 0w-40 Euro Car Formula Synthetic is one STOUT oil meeting both GM-LL-025-A and GM-LL-025-B specs among a long list of other specs. Thats a " up too " two year service spec BTW for 5 bucks a quart @ Autozones .
That oil will work very very well for you and is the factory fill for Porsche and others like the 05 Viper .
Burning Brakes
Joined: Jan 2004
Posts: 811
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From: RPV CA
Originally Posted by sirsenna
Well... my 98 isnt $45000... plus I just got it... first oil change.
It was a valid question
Thanks for the tip...synthetic it is...
Denis
It was a valid question
Thanks for the tip...synthetic it is...
Denis
also, it is a cheap insurance too....
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From: King George VA
Originally Posted by mountainmotor
Just a tip . Look into the new Mobil Extended Performance Synthetic . It has even more anti-wear and other additives than regular Mobil1 and currently is just 50 cents per quart more money . It's only been available for a couple weeks now .
http://www.mobiloil.com/USA-English/...rformance.aspx
The Mobil 0w-40 Euro Car Formula Synthetic is one STOUT oil meeting both GM-LL-025-A and GM-LL-025-B specs among a long list of other specs. Thats a " up too " two year service spec BTW for 5 bucks a quart @ Autozones .
That oil will work very very well for you and is the factory fill for Porsche and others like the 05 Viper .
http://www.mobiloil.com/USA-English/...rformance.aspx
The Mobil 0w-40 Euro Car Formula Synthetic is one STOUT oil meeting both GM-LL-025-A and GM-LL-025-B specs among a long list of other specs. Thats a " up too " two year service spec BTW for 5 bucks a quart @ Autozones .
That oil will work very very well for you and is the factory fill for Porsche and others like the 05 Viper .
Not trying to get into another debate with you as I really don't have the time...
But, the new Mobil 1 Extended Peformance oil does not meet GM Standard 4718M, nor does the Mobil 0w40 Euro Car Formula. A quote from another forum:
"I emailed Mobil this the response I got
Mobil 1 EP does not meet GM4718M. "
Drifting
Joined: Jul 2001
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Originally Posted by Subdriver
Mountainmotor,
Not trying to get into another debate with you as I really don't have the time...
But, the new Mobil 1 Extended Peformance oil does not meet GM Standard 4718M, nor does the Mobil 0w40 Euro Car Formula. A quote
Not trying to get into another debate with you as I really don't have the time...
But, the new Mobil 1 Extended Peformance oil does not meet GM Standard 4718M, nor does the Mobil 0w40 Euro Car Formula. A quote
Just razzin you there a bit but you keep harping this 4178 deal and you haven't a clue what it's about . I've asked you time again to explain the parameters of that spec and in your replies you disregard my question. I do know the spec but I'm not educating an oil saleman today . Please don't take that too hard but I'm of the opinon if you are throwing it out there as a sales tool, you should know exactly why your dissing non 4178 oils for engines out of warranty .
If an oil exceeds 4178 thats icing on the cake . Every oil I have ever recommended here @ Corvetteforum exceeds 4178 so your effort in using that spec as a Amsoil " selling tool " is a futile attempt with me , IMO .
BTW , Mobil submits ALL of their oil for actual API and ACEA testing to ensure the oils are up to task .
Please show me where Amsoil does this with 4178 . This street goes both ways .
Drifting
Joined: Jul 2001
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I tell you what , I'll give in on GM4718M and what it is , but for a reason ...................
Googled from one of the gazzilion Amsoil sites on the web vs pulling out an SAE paper or API pdf .
"Most synthetics mention GM 4718M in their list of claims; that's the unique spec created by General Motors for Corvette oil. It's a high-temperature requirement that tolerates less oxidation (thickening) and volatility (boil-off) on a standard engine test called Sequence 111E according to engineer Bob Olree of GM Powertrain "
Thats actually Sequence IIIE . He He , show me a buck a quart 10w-30 dino that won't meet Sequence IIIE oxidative thickening and Noack these days .
Minimum Noack must be not more than 15 , oxidation not more than something like 246% thickening over new oil . Later I'll post the exact % thickening allowed . Noack is absolute .
Not much to brag about there .... huh ? They even use a GM V-6 test engine
Giminnee , I was off a bit . That test allows 375% thickening
http://www.swri.edu/4org/d08/GasTest...st/default.htm
Speaking of oil , I've got some Synergyn 3w-30 that needs changed . It has around 10 months and 11k miles on it . I'll catch it in a clean drain pan and use it in the work car for another 6 months or so
Googled from one of the gazzilion Amsoil sites on the web vs pulling out an SAE paper or API pdf .
"Most synthetics mention GM 4718M in their list of claims; that's the unique spec created by General Motors for Corvette oil. It's a high-temperature requirement that tolerates less oxidation (thickening) and volatility (boil-off) on a standard engine test called Sequence 111E according to engineer Bob Olree of GM Powertrain "
Thats actually Sequence IIIE . He He , show me a buck a quart 10w-30 dino that won't meet Sequence IIIE oxidative thickening and Noack these days .
Minimum Noack must be not more than 15 , oxidation not more than something like 246% thickening over new oil . Later I'll post the exact % thickening allowed . Noack is absolute .
Not much to brag about there .... huh ?
They even use a GM V-6 test engineGiminnee , I was off a bit . That test allows 375% thickening
http://www.swri.edu/4org/d08/GasTest...st/default.htm
Speaking of oil , I've got some Synergyn 3w-30 that needs changed . It has around 10 months and 11k miles on it . I'll catch it in a clean drain pan and use it in the work car for another 6 months or so
Last edited by mountainmotor; Feb 8, 2005 at 10:23 AM.
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From: King George VA
Originally Posted by mountainmotor
"Most synthetics mention GM 4718M in their list of claims; that's the unique spec created by General Motors for Corvette oil. It's a high-temperature requirement that tolerates less oxidation (thickening) and volatility (boil-off) on a standard engine test called Sequence 111E according to engineer Bob Olree of GM Powertrain "
Thats actually Sequence IIIE . He He , show me a buck a quart 10w-30 dino that won't meet Sequence IIIE oxidative thickening and Noack these days .
Thats actually Sequence IIIE . He He , show me a buck a quart 10w-30 dino that won't meet Sequence IIIE oxidative thickening and Noack these days .
I'd ask you in return that if it this standard was so easy to meet, then why doesn't Mobil 1 EP meet the standard? Mobil themselves have stated it does not meet this standard.
My opinion on this matter is fairly clear cut and I'm not trying to use it as a selling point for AMSOIL, though I don't think it hurts either.
My opinion, once again: My owners manual states in at least three places that the oil must meet GM Standard 4718M. That's not my standard, it is GMs. There are numerous oils that do meet this standard and they are labeled on the product data sheet that they do so.
If someone wants to use an oil that doesn't meet this standard, that is certainly up to them, but in my opinion, they should make that decision knowingly, not blindly.
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From: nj
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From: nj