Positraction Differential lubricants - Team Camaro Tech
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post #1 of 19 (permalink) Old Mar 7th, 09, 10:25 PM Thread Starter
Julio
 
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Positraction Differential lubricants

As I was changing the oil in the rear differential, there was a tag that says Positraction differential lubricant only, is there a difference in lubricants. I was going to use 85W-90W, is that ok or should I look for a lubricants specifically for positraction?
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post #2 of 19 (permalink) Old Mar 8th, 09, 01:44 AM
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Re: Positraction Differential lubricants

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Originally Posted by 69Camaro350 View Post
As I was changing the oil in the rear differential, there was a tag that says Positraction differential lubricant only, is there a difference in lubricants. I was going to use 85W-90W, is that ok or should I look for a lubricants specifically for positraction?
Use the 85W-90W as you planned.then use some posi additive.It's a little small bottle 6oz or so.......

you will find it at almost any parts house.....

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post #3 of 19 (permalink) Old Mar 8th, 09, 05:08 AM
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Re: Positraction Differential lubricants

Get the GM posi-trac additive (2 bottles) and you'll be good.

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post #4 of 19 (permalink) Old Mar 8th, 09, 08:41 AM
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Re: Positraction Differential lubricants

Or you can use Amsoil synthetic gear lubes, they have the additive built into it already plus it will run cooler for you as well.

Click..is Jim..former owner of a 69RS-LM1 350/255 - 700r
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post #5 of 19 (permalink) Old Mar 8th, 09, 09:18 AM Thread Starter
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Re: Positraction Differential lubricants

Thanks team for the info.
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post #6 of 19 (permalink) Old Mar 8th, 09, 09:21 AM
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Re: Positraction Differential lubricants

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Or you can use Amsoil synthetic gear lubes, they have the additive built into it already plus it will run cooler for you as well.
Do you sell Amsoil?
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post #7 of 19 (permalink) Old Mar 8th, 09, 10:24 AM
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Re: Positraction Differential lubricants

Anyone know off hand how many quarts does a typical 12 bolt rear end take?
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post #8 of 19 (permalink) Old Mar 8th, 09, 11:17 AM
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Re: Positraction Differential lubricants

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Anyone know off hand how many quarts does a typical 12 bolt rear end take?
About 2 qt. is what I used. I also use Royal Purple it has the additive in it also.
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post #9 of 19 (permalink) Old Mar 8th, 09, 11:46 AM
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Re: Positraction Differential lubricants

2 quarts of oil and one bottle of GM or Ford additive. Don't use the additive that you get at the auto parts store unless it's GM or Ford. Use only one bottle of additive unless you have an Auburn, then use 2 bottles.
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post #10 of 19 (permalink) Old Mar 8th, 09, 11:55 AM
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Re: Positraction Differential lubricants

What exactly does this bottle of posi additive do?.....Is it an anti foaming agent to prevent the gear lube from foaming?
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post #11 of 19 (permalink) Old Mar 8th, 09, 12:02 PM
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Re: Positraction Differential lubricants

Redline 75/90 has additive in it and they also have the additive separate.
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post #12 of 19 (permalink) Old Mar 8th, 09, 12:14 PM
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Re: Positraction Differential lubricants

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What exactly does this bottle of posi additive do?.....Is it an anti foaming agent to prevent the gear lube from foaming?
Modifies the lubricant so the clutches slip better going around a corner. No chattering.

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post #13 of 19 (permalink) Old Mar 8th, 09, 12:25 PM
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Re: Positraction Differential lubricants

Yea, it makes the clutches slip easier.This kind of goes against the purpose of the clutches in the first place. That is why you should only add as much additive as you need. Too much additive makes the posi less effective.
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post #14 of 19 (permalink) Old Mar 8th, 09, 12:38 PM
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Re: Positraction Differential lubricants

Myself and BigGearHead both have Amsoil available for you, through ordering direct from Amsoil if you want.
PM either of us

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post #15 of 19 (permalink) Old Mar 8th, 09, 04:02 PM
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Re: Positraction Differential lubricants

In my 69 10 Bolts, I used GM oil (80W90, P/N 89021671) with one 4oz bottle of GM Limitted Slip Axle Lubricant Additive (P/N 1052358).

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