Diff fluid - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 3 (permalink) Old 08-02-2013, 08:10 PM Thread Starter
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89 Stroker's Avatar
Join Date: Apr 2012
Posts: 291
Diff fluid

whats the best diff oil to run in the rear end of an 89 F350??

don't really know anything about it so would like some input

1989 F350
7.3L PSD
Crew Cab
Long Bed
6" Lift
37" Military Wranglers

04 F350
6.0L SD
Crew Cab
Long Bed
8" Donahoe Suspension Lift
40" Pro-comp X terrain
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post #2 of 3 (permalink) Old 08-03-2013, 02:04 AM
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Location: Haines City, FL
Posts: 603
Re: Diff fluid

I was wondering around discount auto parts today and thinking about the same thing for my 97. There are several to choose from I hope you get some input on this soon.

2001 F250 CCLB, PHP Hydra, 6637, MBRP 4" exhaust and rear air bags

97' F250 ECLB, 7.3, Baby Swamps, Hydra w/swamps tunes, 6637, 3"dp 4" straight, Dana 60, 2.25 PMF RSK, Built Trans & Cooler, DIY efuel
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post #3 of 3 (permalink) Old 08-04-2013, 07:20 PM
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Posts: 81
Re: Diff fluid

I'm getting ready to change mine over to Amsoil Severe Gear 75-140 in my 97 F350, but I'm a dealer so I'm a little biased. lol

1997 F350 6pos , 3" DP 4" straight, SBC clutch, Auto Meter Gauges, Irate bellowed up pipes, WW2, 1.0, Intercooled, TS 6 position chip, Amsoil 4510 CAI.
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