Rear end lube change
Thread Starter
Safety Car
Joined: Mar 2000
Posts: 3,620
Likes: 2
From: Hillsboro OR
Rear end lube change
Can I get by with just rear axel lube that is designed for limited slip rear ends or do I need to add the special limited slip additive mentioned in the service manual ? I am using valvoline synthetic gear lube.
[Modified by AquaMetallic94LT1, 4:46 PM 10/31/2001]
[Modified by AquaMetallic94LT1, 4:46 PM 10/31/2001]
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Re: Rear end lube change (AquaMetallic94LT1)
You need to contact Valvoline. Some come with it already. Redline makes two versions, one with and one without such that you can adjust the clutch pack locking. Too much will in effect negate the limited slip capability of your differential.
Drifting
Joined: Oct 2000
Posts: 1,739
Likes: 51
From: Northern California
Re: Rear end lube change (AquaMetallic94LT1)
AquaMetallic94LT1
With Red-Line there's a Superlight, Lightweight or Heavy Shockproof Gear Oil. I'm running the Heavy Shockproof Gear oil with a bottle of additive.
With Red-Line there's a Superlight, Lightweight or Heavy Shockproof Gear Oil. I'm running the Heavy Shockproof Gear oil with a bottle of additive.
Thread Starter
Safety Car
Joined: Mar 2000
Posts: 3,620
Likes: 2
From: Hillsboro OR
Re: Rear end lube change (AquaMetallic94LT1)
I put Redline in it about 4000 miles ago. I ordered the limited slip version but Summit sent me the open differential lubricant so I got them to send me the additive that Redline sells instead of exchanging the lube. Recently, I noticed the rearend moans around street corner turns after the car has been driven over 25 minutes. I want to change the lube and see if that helps get rid of the noise.
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Instructor
Joined: Sep 2001
Posts: 171
Likes: 0
Re: Rear end lube change (SPEEDEMON)
OK.....I wont address the Auburn posi with their MM cone style of limited slip, but
if you are using a limited slip with a clutch pack behind each side gear, the rules
may be different. Quote "The EatonPosi LSD should be installed using a mineral
based gear oil 80 W 90 (GM #1052271). As an extra precaution for heavy usage
applications it is also recommended to use 4 oz. of GM limited slip lube #1052358
The EatonPosi is NOT recommended to be used in synthetic oils because of the
naturally higher temperatures created by friction discs.
if you are using a limited slip with a clutch pack behind each side gear, the rules
may be different. Quote "The EatonPosi LSD should be installed using a mineral
based gear oil 80 W 90 (GM #1052271). As an extra precaution for heavy usage
applications it is also recommended to use 4 oz. of GM limited slip lube #1052358
The EatonPosi is NOT recommended to be used in synthetic oils because of the
naturally higher temperatures created by friction discs.
Drifting
Joined: Oct 2000
Posts: 1,739
Likes: 51
From: Northern California
Re: Rear end lube change (arnold)
Arnold
As I said earlier, I'm using Red-Line Heavy Shockproof with one bottle of Red-Line additive just like most of the other guys running the ZR-1's. We don't have a problem at all running Synthetic oils. I personally wouldn't put anything in but Synthetics. No Dinosaur oil for me!
As I said earlier, I'm using Red-Line Heavy Shockproof with one bottle of Red-Line additive just like most of the other guys running the ZR-1's. We don't have a problem at all running Synthetic oils. I personally wouldn't put anything in but Synthetics. No Dinosaur oil for me!
Team Owner
Joined: May 2001
Posts: 25,058
Likes: 1,265
From: Virginia
St. Jude Donor '11
Re: Rear end lube change (AquaMetallic94LT1)
Can I get by with just rear axel lube that is designed for limited slip rear ends or do I need to add the special limited slip additive mentioned in the service manual ? I am using valvoline synthetic gear lube.
[Modified by AquaMetallic94LT1, 4:46 PM 10/31/2001]
[Modified by AquaMetallic94LT1, 4:46 PM 10/31/2001]
Do not just "add it"...thats :crazy: ...you add the 4oz bottle of additive with GM's fluid which isn't synthetic...don't be a damn fool and guess...you can Fork up the clutches because of too much slippage or not enough slippage...contact Valvoline and ask someone in tech at the company... :D
[Modified by Yello95, 2:22 AM 11/1/2001]
Instructor
Joined: Sep 2001
Posts: 171
Likes: 0
Re: Rear end lube change (Yello95)
Speedemon-
GM does not live in the stone ages. They have recommended synthetic oil in the
motor when they considered it warranted. Have they not? Do they recommend the
'modern' lube for your rear end? Personally, if I had a ZR-1, (or a friction disc LSD),
going with the flow, (: would be secondary. Rather than be 'one of the guys', GM
& Eaton engineering would get my attention. This post was not meant to be derogatory,
but rather to possibly position your view from a different, 'less popular' angle.
:)
GM does not live in the stone ages. They have recommended synthetic oil in the
motor when they considered it warranted. Have they not? Do they recommend the
'modern' lube for your rear end? Personally, if I had a ZR-1, (or a friction disc LSD),
going with the flow, (: would be secondary. Rather than be 'one of the guys', GM
& Eaton engineering would get my attention. This post was not meant to be derogatory,
but rather to possibly position your view from a different, 'less popular' angle.
:)
Instructor
Joined: Sep 2001
Posts: 171
Likes: 0
Re: Rear end lube change (arnold)
I hope I am not bringing up a dead horse here, but I felt a follow-up
clarification was in order. On my previous post of 10-31, I stated that
Eaton did not recommend synthetic 'cuz of the naturally higher temps
generated by the friction discs. That would appear to be a contradication
or at least confusing. The reason being, one of the advantages of using
synthetic is it's superior lubrication in high heat conditions. So why not
recommend synthetic? That question was posed to Eaton. In corres-
pondence with Eaton, their clarification was that synthetics have shown
a higher propensity to chatter than mineral based lubes. Eaton went on
to say that they agree that synthetics are more effective at dissapating
heat than mineral based lubes. Sorry for the confusion.
clarification was in order. On my previous post of 10-31, I stated that
Eaton did not recommend synthetic 'cuz of the naturally higher temps
generated by the friction discs. That would appear to be a contradication
or at least confusing. The reason being, one of the advantages of using
synthetic is it's superior lubrication in high heat conditions. So why not
recommend synthetic? That question was posed to Eaton. In corres-
pondence with Eaton, their clarification was that synthetics have shown
a higher propensity to chatter than mineral based lubes. Eaton went on
to say that they agree that synthetics are more effective at dissapating
heat than mineral based lubes. Sorry for the confusion.
Team Owner
Joined: May 2001
Posts: 25,058
Likes: 1,265
From: Virginia
St. Jude Donor '11
Re: Rear end lube change (arnold)
Speedemon-
GM does not live in the stone ages. They have recommended synthetic oil in the
motor when they considered it warranted. Have they not? Do they recommend the
'modern' lube for your rear end? Personally, if I had a ZR-1, (or a friction disc LSD),
going with the flow, (: would be secondary. Rather than be 'one of the guys', GM
& Eaton engineering would get my attention. This post was not meant to be derogatory,
but rather to possibly position your view from a different, 'less popular' angle.
:)
GM does not live in the stone ages. They have recommended synthetic oil in the
motor when they considered it warranted. Have they not? Do they recommend the
'modern' lube for your rear end? Personally, if I had a ZR-1, (or a friction disc LSD),
going with the flow, (: would be secondary. Rather than be 'one of the guys', GM
& Eaton engineering would get my attention. This post was not meant to be derogatory,
but rather to possibly position your view from a different, 'less popular' angle.
:)
I surely don't take offense at your opinion and others shouldn't either..., other opinions can be very helpful.
:lol: I still live in the stone ages...hahahaha...I've used GM differential fill + posi additive in my '67 427/435 since new in 1967...Ive used GM diff. fill+posi. add. in my '77 350/350 since I bought it in 1977...I use GM fill+posi add. in my "95 since new...My point is that I have never used anything other than GM diff. fill+ posi. add. and never had ANY problems whatsoever any aspect of performance of my differentials...50K/1967, 125K/1977, 51K/1995. Now engine oil is a different story...Mobil 1 for the '95 and non-synthetic Valvoline Racing oil in the "67 and "77... :cheers: :seeya
[Modified by Yello95, 11:36 PM 11/4/2001]
