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06-03-2003, 04:10 PM | #1 |
Registered Member
Join Date: May 2002
Location: Florida
Posts: 31
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diff. fluid?? synth or std oil
Hey all,
I have a quick question, I am not rebuilding my rear end yet but am going to in the far future. At this time I am replacing leaking rear cover gasket. I am going to use synthetic without friction modifier. Anyone have an opinion either way?? Use std gear oil or Synthetic, all opinions welcomed. John
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K&N: 2.5" Flows(3-chmbr) & Offroad H-Pipe: Underdrive Pullies: Eibach Pro springs: KYB shocks/struts: Pro3I C/C plates: |
06-03-2003, 04:50 PM | #2 |
Factoy Five Roadster
Join Date: May 2000
Location: Sevier Co,Tennessee
Posts: 1,681
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Synthetic, it will also make clutches in posi units lock up quicker.
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Frank |
06-04-2003, 06:23 AM | #3 |
Registered Member
Join Date: Mar 2003
Location: NC
Posts: 64
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I would use standard oil for the first 300-500 miles after the rebuild, then change it and run synthetic.
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06-04-2003, 07:58 AM | #4 |
or '331 LX Eric'
Join Date: Jan 1999
Location: Columbus, Ohio
Posts: 2,142
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I used Amsoil (synthetic) and one bottle of Ford Friction Modifier in my rear-end that I just finished up a few weeks ago. I upgraded my 8.8 with an Auburn Pro unit, Moser 31 spline C-clip axles, 3.73 ring and pinion, T/A performance girdle/cover with ARP stud kit.
No problems here. Happy motoring. E
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1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60' |
06-04-2003, 11:21 AM | #5 |
Rebel Fleet Commander
Join Date: Oct 2001
Location: Huber Heights, OH
Posts: 1,003
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I know with my Eaton, it said do NOT use synthetic. But mine is not a clutch type so I really dont know.
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1993 Mustang GT, PTK w/ T-64 - My Cardomain Webpage 11.25@123.5 on only 8 psi. 10.84@121 on only 1 headgasket "The Truth is, Your the Weak, and I am the Tyranny of Evil Men!" |
06-05-2003, 06:31 PM | #6 |
Registered Member
Join Date: May 2002
Location: Florida
Posts: 31
|
just returned
Hey everyone,
Thanks for the extra info, I just changed my oil and put synthetic back in. The speed shops I talked to said with synthetic I dont need modifier. I have a couple of hundred miles on it and it acts same as before. When I rebuild I am not sure what setup I will go with stock rebuilt or other type posi unit but either way I know more about rear end fluids now. Thanks, John
__________________
K&N: 2.5" Flows(3-chmbr) & Offroad H-Pipe: Underdrive Pullies: Eibach Pro springs: KYB shocks/struts: Pro3I C/C plates: |
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