Does anyone know who GM uses for this stuff? I would assume since their oil contract is with Mobil, that it is probably the Mobil 1 LS 75-90. The dealer wants $35/qt for the stuff. I'm pretty sure its not made out of gold, but I want to use the right stuff....
GM 75-90syn gear oil
- Thread starter tmundal
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Originally Posted By: tmundal
Does anyone know who GM uses for this stuff? I would assume since their oil contract is with Mobil, that it is probably the Mobil 1 LS 75-90. The dealer wants $35/qt for the stuff. I'm pretty sure its not made out of gold, but I want to use the right stuff....
Stay away from this $35.00 a quart gear oil from the dealer, they are overcharging you by $20.00, that $20.00 will go towards there Christmas Party.
I would just go to NAPA or CarQuest and pick this up there.
I think you can still pick up Mobil 1 Gear Oil at Advance Auto or Autozone.
I think that I paid something like $13.00 a quart for the Amsoil 75W-90 Gear Lube.
Does anyone know who GM uses for this stuff? I would assume since their oil contract is with Mobil, that it is probably the Mobil 1 LS 75-90. The dealer wants $35/qt for the stuff. I'm pretty sure its not made out of gold, but I want to use the right stuff....
Stay away from this $35.00 a quart gear oil from the dealer, they are overcharging you by $20.00, that $20.00 will go towards there Christmas Party.
I would just go to NAPA or CarQuest and pick this up there.
I think you can still pick up Mobil 1 Gear Oil at Advance Auto or Autozone.
I think that I paid something like $13.00 a quart for the Amsoil 75W-90 Gear Lube.
All of GM's gear oils are blended by Texaco.
FWIW, any GL-5 synthetic gear oil is just fine. Most GM parts counters will sell you Mobil 1 gear oil over the counter unless you SPECIFICALLY ask for the grape juice.
There are tons of GM vehicles on the road with millions of miles logged on non-GM gear oils. Pick any and it should suit you well.
FWIW, any GL-5 synthetic gear oil is just fine. Most GM parts counters will sell you Mobil 1 gear oil over the counter unless you SPECIFICALLY ask for the grape juice.
There are tons of GM vehicles on the road with millions of miles logged on non-GM gear oils. Pick any and it should suit you well.
That GM Grape Juice stuff is so over priced it is not funny. Any aftermarket GL-5 synthetic 75W-90 as stated is a perfectly acceptable replacement. I have used RP MaxGear 75W-90 to replace it in 2 Silverado's and it worked great. $25 a qt for the GM [censored] and just $11 for the RP.
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Originally Posted By: unDummy
Read the Amsoil gear oil test
And take what you read with a big grain of salt because a lot of the test data they provide does not match up to what the other companies show for their product. Who are you going to believe? The competitor( Amsoil )or the fluid's mfg( RP, M1, Valvoline, Redline, etc... )?
I brought a lot of this up in the big White Papers thread and was shouted down pretty good but the results they give do not jive with results from other sources in all areas. NO one refuted my claims they just said I was a nut job.
Apparantly because Amsoil wrote it then it must be true.
I mainly concentrated on RP as that is the brand I use and I found a LOT of major test result differences.
Amsoil, or the "independant lab" they commissioned for the test, showed failures in corrosion tests and numbers from other test results that were WAY out of whack with what RP shows for their fluid. I checked into a few other brands and did find some differences there. Again though, mainly RP as that is my preferred brand and I wanted to check into the claims made by Amsoil about it that were so poor. I posted some of those differences if anyone wannts to see them go to the WP thread and look it up.
Just pointing this out so people will be informed fully. The WP results, IMO, are highly suspect. They should not be taken as the Holy Bible of gear oil. Certainly not when the results shown differ so greatly from the fluid mfg's own testing.
NOTE - this is NOT meant to start anything with anyone. Not bashing Amsoil either. Let's not go there PLEASE! I just hate to see that test document used/put forth as some kind of undisputable holy scroll to base gear oil decisions on. At best it should be just one part of how you decide.
Read the Amsoil gear oil test
And take what you read with a big grain of salt because a lot of the test data they provide does not match up to what the other companies show for their product. Who are you going to believe? The competitor( Amsoil )or the fluid's mfg( RP, M1, Valvoline, Redline, etc... )?
I brought a lot of this up in the big White Papers thread and was shouted down pretty good but the results they give do not jive with results from other sources in all areas. NO one refuted my claims they just said I was a nut job.
Amsoil, or the "independant lab" they commissioned for the test, showed failures in corrosion tests and numbers from other test results that were WAY out of whack with what RP shows for their fluid. I checked into a few other brands and did find some differences there. Again though, mainly RP as that is my preferred brand and I wanted to check into the claims made by Amsoil about it that were so poor. I posted some of those differences if anyone wannts to see them go to the WP thread and look it up.
Just pointing this out so people will be informed fully. The WP results, IMO, are highly suspect. They should not be taken as the Holy Bible of gear oil. Certainly not when the results shown differ so greatly from the fluid mfg's own testing.
NOTE - this is NOT meant to start anything with anyone. Not bashing Amsoil either. Let's not go there PLEASE! I just hate to see that test document used/put forth as some kind of undisputable holy scroll to base gear oil decisions on. At best it should be just one part of how you decide.
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Well, if any other manufacturer wants to pay the lab, run the tests, and post the results, then they should.
I don't believe Amsoil. But, I believe the data in the test at the time of the test.
We've also seen VOA's on certain brands that didn't even come close to the spec sheet posted on the brand's website.
And, this thread had nothing to do with Amsoil or your Royalpurple fluid. This was a thread concerning the GM grape juice.
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
I don't believe Amsoil. But, I believe the data in the test at the time of the test.
We've also seen VOA's on certain brands that didn't even come close to the spec sheet posted on the brand's website.
And, this thread had nothing to do with Amsoil or your Royalpurple fluid. This was a thread concerning the GM grape juice.
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
Originally Posted By: unDummy
Well, if any other manufacturer wants to pay the lab, run the tests, and post the results, then they should.
I don't believe Amsoil. But, I believe the data in the test at the time of the test.
We've also seen VOA's on certain brands that didn't even come close to the spec sheet posted on the brand's website.
And, this thread had nothing to do with Amsoil or your Royalpurple fluid. This was a thread concerning the GM grape juice.
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
I am sticking to the topic. YOU brought up the Amsoil White Papers not me.
Well, if any other manufacturer wants to pay the lab, run the tests, and post the results, then they should.
I don't believe Amsoil. But, I believe the data in the test at the time of the test.
We've also seen VOA's on certain brands that didn't even come close to the spec sheet posted on the brand's website.
And, this thread had nothing to do with Amsoil or your Royalpurple fluid. This was a thread concerning the GM grape juice.
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
I am sticking to the topic. YOU brought up the Amsoil White Papers not me.
Originally Posted By: unDummy
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
Amsoil is not a bad gear oil, just too F*(&ing expensive compares to many other good oils.
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
Amsoil is not a bad gear oil, just too F*(&ing expensive compares to many other good oils.
You can get the GM grape juice on ebay for $9 qt.
Originally Posted By: azsynthetic
Originally Posted By: unDummy
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
Amsoil is not a bad gear oil, just too F*(&ing expensive compares to many other good oils.
How so? It's barely more expensive than the Super Tech brand synthetic from Walmart!
Originally Posted By: unDummy
GM 75w90 is not a bad gear oil, just too F*(&ing expensive. And, the Amsoil test shows that it isn't a bad gear oil.
Stick to the topic.
Amsoil is not a bad gear oil, just too F*(&ing expensive compares to many other good oils.
How so? It's barely more expensive than the Super Tech brand synthetic from Walmart!
Originally Posted By: chevrofreak
How so? It's barely more expensive than the Super Tech brand synthetic from Walmart!
Amsoil is never on sale whereas other synthetic oils are on sale on a regular basis for less than $4/qt. When was the last time you heard of an Amsoil clearance?
How so? It's barely more expensive than the Super Tech brand synthetic from Walmart!
Amsoil is never on sale whereas other synthetic oils are on sale on a regular basis for less than $4/qt. When was the last time you heard of an Amsoil clearance?
We're talking about gear oil. Where have you ever seen synthetic gear oil that cheap?
Checker, Pepboy, and Autozone. I get a flyer in the mail or newspaper on a weekly basis. You just got to be ready to stock up. I drive 65 miles one way to work across town so I get many opportunities to stop in when there is a sale.
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