Reargear oil..
Thread Starter
Melting Slicks
Joined: Feb 2002
Posts: 2,298
Likes: 1
From: Sodertalje/Sweden
Reargear oil..
Theres an ongoing discussion between my friends on which oil is the best for the rearaxel.
Some state that 80-140 is the way to go because of its thickness and it will help dampen the load on the gears.
The other half claims that its unnecessary to go that thick and 80-90 oil is just plenty enough to lube and dampen the gearload.
Many of the "rearaxel pro`s/rebuilders" says that 80-140 is the oil to use.
Whats your take on this issue?
Some state that 80-140 is the way to go because of its thickness and it will help dampen the load on the gears.
The other half claims that its unnecessary to go that thick and 80-90 oil is just plenty enough to lube and dampen the gearload.
Many of the "rearaxel pro`s/rebuilders" says that 80-140 is the oil to use.
Whats your take on this issue?
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by BB wowbagger
Theres an ongoing discussion between my friends on which oil is the best for the rearaxel.
Some state that 80-140 is the way to go because of its thickness and it will help dampen the load on the gears.
The other half claims that its unnecessary to go that thick and 80-90 oil is just plenty enough to lube and dampen the gearload.
Many of the "rearaxel pro`s/rebuilders" says that 80-140 is the oil to use.
Whats your take on this issue?
Some state that 80-140 is the way to go because of its thickness and it will help dampen the load on the gears.
The other half claims that its unnecessary to go that thick and 80-90 oil is just plenty enough to lube and dampen the gearload.
Many of the "rearaxel pro`s/rebuilders" says that 80-140 is the oil to use.
Whats your take on this issue?
Le Mans Master
Joined: May 2000
Posts: 6,493
Likes: 6
From: Bloomington MN
Cruise-In II Veteran
I used 80w-90, but on the container Valvoline said posi additive wasn't necessary...do they add that right in the lube now? I have only had mine in and out of the garage since the rear end rebuild...not even around the block yet.
Tech Contributor
Joined: Aug 1999
Posts: 15,175
Likes: 3,990
From: Connecticut, USA
Originally Posted by A C
I used 80w-90, but on the container Valvoline said posi additive wasn't necessary...do they add that right in the lube now? I have only had mine in and out of the garage since the rear end rebuild...not even around the block yet.
Gary
Le Mans Master
Joined: May 2000
Posts: 6,493
Likes: 6
From: Bloomington MN
Cruise-In II Veteran
Originally Posted by gtr1999
AC, I used Valvoline in the past and didn't use the GM additive, it freakin knocked all the time. Get the 2 bottles for $14 and save yourself a headache.
Gary
Gary
Thanks for the advice.
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Intermediate
Joined: Feb 2004
Posts: 27
Likes: 0
From: Greer SC
I had used 80w-90 and some off brand posi additive. Talk about bumps in the night. And the day, afternoon, evenings....
Replaced it with Valvoline 80w-90 and one bottle of the GM additive and nary a noise.
I looked at the 80W-140 oil, but the "directions" stated it was to be used in a posi for "top off only."
Replaced it with Valvoline 80w-90 and one bottle of the GM additive and nary a noise.
I looked at the 80W-140 oil, but the "directions" stated it was to be used in a posi for "top off only."
Instructor
Joined: Nov 2002
Posts: 183
Likes: 0
From: Stockholm, Sweden
BB wowbagger
Please post here when you decided what oil to use, I'm about to do this change this winter too.
I have a whining sound from the rear axle when I let of gas at some speeds, i figured that the first thing to change is the oil.
Please post here when you decided what oil to use, I'm about to do this change this winter too.
I have a whining sound from the rear axle when I let of gas at some speeds, i figured that the first thing to change is the oil.