When companies like Ford and Jeep tell you that you need to run a Syn oil, that really saying something, since they won't require you to run a syn oil anywhere else.
Opinion - Synthetic Gear Oils in General
- Thread starter UNC151
- Start date
- Status
Originally Posted By: Y_K
That old Amsoil comparison 'test' was cooked to make it look the best, of course.
Please post the actual proof of this.
That old Amsoil comparison 'test' was cooked to make it look the best, of course.
Please post the actual proof of this.
- Joined
- Dec 30, 2006
- Messages
- 29,558
I studied the gear oil UOA section here front to back. The wear metals between mineral and synthetic (especially Amsoil SVG) are astounding. Amsoil SVG and Redline according to UOA looks to be the best.
Originally Posted By: Pablo
Originally Posted By: Y_K
That old Amsoil comparison 'test' was cooked to make it look the best, of course.
Please post the actual proof of this.
If I do, you'll complain again and I am going to be banned again. Big deal.. the ones with brains can figure that out from the Affidavit portion of the pdf file. Anyway, it may very well be a good oil, I just don't trust the comparison 'test'
Originally Posted By: Y_K
That old Amsoil comparison 'test' was cooked to make it look the best, of course.
Please post the actual proof of this.
If I do, you'll complain again and I am going to be banned again. Big deal.. the ones with brains can figure that out from the Affidavit portion of the pdf file. Anyway, it may very well be a good oil, I just don't trust the comparison 'test'
Originally Posted By: Y_K
Originally Posted By: Pablo
Originally Posted By: Y_K
That old Amsoil comparison 'test' was cooked to make it look the best, of course.
Please post the actual proof of this.
If I do, you'll complain again and I am going to be banned again. Big deal.. the ones with brains can figure that out from the Affidavit portion of the pdf file. Anyway, it may very well be a good oil, I just don't trust the comparison 'test'
So you really don't have any proof. Thanks.
Originally Posted By: Pablo
Originally Posted By: Y_K
That old Amsoil comparison 'test' was cooked to make it look the best, of course.
Please post the actual proof of this.
If I do, you'll complain again and I am going to be banned again. Big deal.. the ones with brains can figure that out from the Affidavit portion of the pdf file. Anyway, it may very well be a good oil, I just don't trust the comparison 'test'
So you really don't have any proof. Thanks.
If you live in a cold climate, the cold flow is an important factor. I was amazed at the cold flow properties of a 75w90 synthetic vs a 80w90 conventional.
This is a Mobil video, but you get the idea.
https://www.youtube.com/watch?v=S3lrzV1MCtU
This is a Mobil video, but you get the idea.
https://www.youtube.com/watch?v=S3lrzV1MCtU
If "they" can make a synthetic gear oil which performs better (which I think is the case)--GREAT.
I'd assume that performance properties which are effected by the additive package will act/degrade similarly whether they're in a conventional or synthetic base oil.
Hmmm...have I ever heard of gear oils' cleaning abilities?
I remember some diffs calling for conventional gear oils. Why would that happen? I think they were Chrysler products.
After much anxiety I put Amsoil Severe Gear 75-110 into my sister's '99 Cherokee at 150K. Kira
ps oldhp's musing about possibly getting ".00456 MPG improvement" works out to an extra 24.5 feet per gallon--NOT BAD. k
I'd assume that performance properties which are effected by the additive package will act/degrade similarly whether they're in a conventional or synthetic base oil.
Hmmm...have I ever heard of gear oils' cleaning abilities?
I remember some diffs calling for conventional gear oils. Why would that happen? I think they were Chrysler products.
After much anxiety I put Amsoil Severe Gear 75-110 into my sister's '99 Cherokee at 150K. Kira
ps oldhp's musing about possibly getting ".00456 MPG improvement" works out to an extra 24.5 feet per gallon--NOT BAD. k
- Joined
- Sep 26, 2010
- Messages
- 9,835
Originally Posted By: cronk
If you live in a cold climate, the cold flow is an important factor. I was amazed at the cold flow properties of a 75w90 synthetic vs a 80w90 conventional. This is a Mobil video, but you get the idea.
https://www.youtube.com/watch?v=S3lrzV1MCtU
This was the video that I saw. Thanks for posting it.
If you live in a cold climate, the cold flow is an important factor. I was amazed at the cold flow properties of a 75w90 synthetic vs a 80w90 conventional. This is a Mobil video, but you get the idea.
https://www.youtube.com/watch?v=S3lrzV1MCtU
This was the video that I saw. Thanks for posting it.
A major benefit of synthetic is the VI. They flow much better in the synchros in the first few miles, giving much better shifts. I switched from 80W-90 to 75W-90 syn a couple of weeks ago in my Corvair and those first few shifts are much better.
Original spec was SAE 80 back in 1960.
I've also been switching over a bunch of Chinese vehicles that are sold here with baulky transmissions. In those cases we are going with Synthetic 75W-85 GL-4+ with the new EP system.
Original spec was SAE 80 back in 1960.
I've also been switching over a bunch of Chinese vehicles that are sold here with baulky transmissions. In those cases we are going with Synthetic 75W-85 GL-4+ with the new EP system.
- Status
Similar threads
