Author Topic: Rear end oil change  (Read 5008 times)

0 Members and 1 Guest are viewing this topic.

Offline Shimy87

  • Turbo Street Eliminator
  • ******
  • Posts: 1238
  • PSI: 2
    • View Profile
Rear end oil change
« on: October 18 2017, 07:25:20 PM »
What should I refill rear with??
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline Scoobum

  • Turbo Street Outlaw
  • *******
  • Posts: 5549
  • PSI: 3
  • YOU CAN'T HANDLE THE TRUTH!!!!
    • View Profile
Re: Rear end oil change
« Reply #1 on: October 18 2017, 10:23:35 PM »
I grab posi additive and gear lube from my GM dealer here in town. I've been beating on that Auburn Pro Series unit for 7 seasons...and it's still hanging in there...so I must be doing something right.
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline Scoobum

  • Turbo Street Outlaw
  • *******
  • Posts: 5549
  • PSI: 3
  • YOU CAN'T HANDLE THE TRUTH!!!!
    • View Profile
Re: Rear end oil change
« Reply #2 on: October 18 2017, 10:46:36 PM »
Shimy, if the funds are there...grab a diff girdle. It's cheap insurance. I have the one from Jeremys yellow car on mine...along with his dual fan setup.
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline 1KWIKSIX

  • Turbo Street Modified
  • *****
  • Posts: 302
  • PSI: 0
    • View Profile
Re: Rear end oil change
« Reply #3 on: October 19 2017, 07:18:45 AM »
X2 I'm with Brad .


Here's what Auburn say about oil for their differentials. ....this is also what I run in my Auburn Pro Series rear end.
Obviously you can substitute the Auburn Gear Friction Additive with the GM product.

Non-Synthetic 80w90 GL-5 oil treated with Auburn Gear friction additive, part #504102 (also known as a friction modifier). Three (3) ounces of additive will treat one quart of oil. GM or Ford limited-slip additive may be used. We do not recommend synthetic oil.
« Last Edit: October 19 2017, 07:10:13 PM by 1KWIKSIX »

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1571
  • PSI: 6
    • View Profile
Re: Rear end oil change
« Reply #4 on: October 19 2017, 10:39:09 AM »
 If you have a stock posi I like synthetic gear dope.   Don't add the whale jizz additive unless you get chatter.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline good2win22

  • Turbo Street Outlaw
  • *******
  • Posts: 2019
  • PSI: 0
  • No man lives happily lest he remove the boredom
    • View Profile
Re: Rear end oil change
« Reply #5 on: October 19 2017, 12:07:28 PM »
Has anyone seen an aftermarket diff unit manufacturer that recommends a synthetic? I know eaton does not recommend synthetic
Jason

1966 Ford Ranch Wagon
1982 Jeep Wagoneer Limited
1986 Grand National BLK PHNX
1987 Turbo Regal Limited
2018 Ram 2500 Cummins

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1571
  • PSI: 6
    • View Profile
Re: Rear end oil change
« Reply #6 on: October 19 2017, 02:43:48 PM »
Do they not recommend it, or recommend against it?
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline gusszgs

  • Turbo Street Modified
  • *****
  • Posts: 431
  • PSI: 1
  • Limited quick brick
    • View Profile
Re: Rear end oil change
« Reply #7 on: October 19 2017, 02:50:31 PM »
Just redid the clutch packs in my T. Got them from Bruce Ponti. He's been doing rear ends for yrs and said Dino 75-80/90 with Posi Gm additive
Jim
1987 T Limited

Offline reality

  • Turbo Street Modified
  • *****
  • Posts: 540
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Rear end oil change
« Reply #8 on: October 19 2017, 04:05:21 PM »
From what I gather synthetic will 'fall' off if the car sits any length of time.

Offline good2win22

  • Turbo Street Outlaw
  • *******
  • Posts: 2019
  • PSI: 0
  • No man lives happily lest he remove the boredom
    • View Profile
Re: Rear end oil change
« Reply #9 on: October 19 2017, 04:41:48 PM »
Do they not recommend it, or recommend against it?
I'm pretty certian eaton recommends against using synthetic
Jason

1966 Ford Ranch Wagon
1982 Jeep Wagoneer Limited
1986 Grand National BLK PHNX
1987 Turbo Regal Limited
2018 Ram 2500 Cummins

Offline Scoobum

  • Turbo Street Outlaw
  • *******
  • Posts: 5549
  • PSI: 3
  • YOU CAN'T HANDLE THE TRUTH!!!!
    • View Profile
Re: Rear end oil change
« Reply #10 on: October 19 2017, 06:39:16 PM »
Shimy, while you're under there ya' may as well toss a set of Moser axles in it. Only a few more minutes work. If the wife starts complaining... give 'er the choice of axles or you pissing the cash away on peelers.
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline Shimy87

  • Turbo Street Eliminator
  • ******
  • Posts: 1238
  • PSI: 2
    • View Profile
Re: Rear end oil change
« Reply #11 on: October 19 2017, 09:28:19 PM »
 :icon_lol:   :cheers:
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1571
  • PSI: 6
    • View Profile
Re: Rear end oil change
« Reply #12 on: October 20 2017, 11:43:58 AM »
I wonder if that recommendation is because they would sell less additive?


My stock posi chatters with dino and doesn't with fully synthetic.


Since I've got over 1/4 million miles on my stock rear end on synthetic, I think I'll ignore the advice and stick with what I've got.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline good2win22

  • Turbo Street Outlaw
  • *******
  • Posts: 2019
  • PSI: 0
  • No man lives happily lest he remove the boredom
    • View Profile
Re: Rear end oil change
« Reply #13 on: October 20 2017, 02:31:05 PM »
I wonder if that recommendation is because they would sell less additive?


My stock posi chatters with dino and doesn't with fully synthetic.


Since I've got over 1/4 million miles on my stock rear end on synthetic, I think I'll ignore the advice and stick with what I've got.
Earl my question was about aftermarket diff manufacturers
Jason

1966 Ford Ranch Wagon
1982 Jeep Wagoneer Limited
1986 Grand National BLK PHNX
1987 Turbo Regal Limited
2018 Ram 2500 Cummins

Offline Forzfed

  • Turbo Street Eliminator
  • ******
  • Posts: 1337
  • PSI: 5
  • Boost n00b
    • View Profile
Re: Rear end oil change
« Reply #14 on: October 20 2017, 03:23:01 PM »
Do they not recommend it, or recommend against it?

Good question.  All I know is my posi with the synthetic no longer works as good as it use to.  Sometimes I question if I even have a posi!  Sucks especially in the Truck with ice and deep snow.  It works but takes much longer to lock up. :(

 

SimplePortal 2.3.7 © 2008-2024, SimplePortal