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Old 08-02-2011, 06:24 PM
01B3000 01B3000 is offline
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Join Date: Dec 2010
Posts: 1,319
Default Rear Diff Fluid Change

Ok, so i know how to do it, but i dont know what weight oil i need. I also plan on running full synthetic, and am unsure of a good gear oil brand, I would like to run lucas, but not 100% sure that they have a full synthetic.

Also for Trans fluid, Any full synthetic Mercon ATF will work for the manual right?
2001 Mazda B-3000 CabPlus "FX2 Off Road"| 3.0 | 5 SPD | 3 In Spindle Lift | Belltech Shackles | UltraGauge |Alpine Head / 10" Kicker Setup | Air Box Mod | Add-A-Leaf| Thrush Welded B4 Rear Wheel | Kobalt Box | Cobra 19 DX IV | Custom PA Speaker | Front/Rear Tow Receiver | 2X Aux Lights | Hideaway Strobes | Back Rack Safety Rack | Amber LED Strobes | Blue LED Strobes | 265/75/R16 General Grabber AT2's
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Old 08-02-2011, 06:27 PM
klinger86 klinger86 is offline
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Posts: 2,970
Default Re: Rear Diff Fluid Change

for the diff you will need 90w if you have a posi aka limited slip i believe you will need the friction modifier....

and the tranny i believe you are correct i know a few of the guys here run synchro meshi in their trannies....
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Old 08-03-2011, 05:08 PM
VH5150 VH5150 is offline
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Posts: 771
Default Re: Rear Diff Fluid Change

I will depend on your diff--I used Mobil 1 75W90 when i did mine--has the friction modifier in it. You'll need 3 bottles if you have an 8.8 with the limited slip. You won't use all of the 3rd bottle. Do yourself a HUGE favor and spend the 7 bucks for a pump that screws onto the bottle.
SOLD---'04 Ranger XLT SuperCab 4x4--4.0 SOHC-Auto--Loaded--Black w/Grey Leather Sport Buckets--Expo OHC--AHI Carbon Fiber-look Trim--Pioneer 290W Sound System--4.10 L/S--Cranked "1" Codes--1" Body Lift--265/75R16 REVO2s--16"x8" Mickey Thompson Classic Lock Wheels with Blue Trim Rings--Bassani Lightning-style CatBack--aFe Intake--Herculiner--Extang FullTilt Tonneau--Black Headlights & Corners--Billet Grille Insert in FX4 Grille Surround--Tinted '06 Tails
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Old 08-03-2011, 05:22 PM
merlin215 merlin215 is offline
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Default Re: Rear Diff Fluid Change

I have used royal purple in the past with good luck . Castrol as well .

2010 Ford Ranger 4 wheel drive
XLT Power Group package
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Old 08-03-2011, 07:16 PM
sgtsandman sgtsandman is offline
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Join Date: Mar 2010
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Default Re: Rear Diff Fluid Change

Unless there is a second tag on the differential specifying 75W140, it's 80W90. I believe there have been people posting here that there is a synthetic version of that weight available.
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2011 Ranger XLT, 4X4, 4 door Super Cab. 4.0L, 5 Speed M50D-R1HD, 3.73:1, 8.8" open differential, Jason Pace cap
1999 Honda CR-V EX, RT4WD, 2.0L, 5 Speed MT, 4.56:1, open differential
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