Diff Fluid Change

[sailor95]

So I just recently got my bearings redone on the hundy and feel that a diff fluid change is a smart next move as I haven't done it in a very long time. What fluid is the best fluid to go back with and does anyone have any suggestions to make this easier? I know its pretty straightforward already but any tips are greatly appreciated.

 

[Snowrydr01]

buy the bottle pump for $10. I just did both of mine 2 days ago and its a nice to have on the rear but needed for the front (if not a very long tube)

 

[planomateo]

Check the FAQ thread in the 100 section.

Front Differential Fluild Change

 

[BEG]

Definitely get a fluid pump. They're cheap and make the job way easier. While you're at it, pick up a set of Toyota magnetic diff plug kits from @NLXTACY to replace the chewed up stock drain plugs. Always make sure to loosen the fill plug before loosening the drain plug. For gear oil, I use Mobil 1 75W-90.

 

[NLXTACY]

Don't overthink it. Use this type of bottle, snip the tip, and just stick the tip of the bottle into the fill hole and use the bottle itself and squeeze. No fuss no muss.

 

[diego355]

Definitely use the bottle pump for the front one, the very long hose route is a bit of a pain.
I used 75w90 Royal purple Synthetic gear oil on my diifs and transfer case

 

[sailor95]

Alright thanks guys, is 75 w 90 good for high mileage and heat? 327k miles and in South Georgia

 

[apdxyk]

For South Georgia, the ultimate in protection IMO would be a straight 90 oil, as recommended by the manual. Harder to find though. My favorite one is 1605 from Lubrication Engineers. Can be shipped from speedwaymotors.com for under $60/gallon. I also used straight 90 from Motul and Royal Purple.. and excellent Mobil Delvac 75W-90 (can be shipped from Zoro). But I don't have as many miles on mine as you do now. I would not overthink this, but I prefer to follow the mfg spec in this case.
LE also make a couple of greases, that are second to none: 3752 (#2) and 3751 (#1 for the front axle needle bearing and bushing). This company is worth keeping in your sights if you are fanatical about your lube supplies. They run state of art facilities in Ft Worth, Texas, and Wichita, Kansas. If you are not so fanatical, use whatever is easier to procure, but use regularly.
I also prefer Motive fluid fillers after having fun with anything else from coat hangers to bottle pumps.

Just sharing my experience.

 

[SWUtah]

So I just recently got my bearings redone on the hundy and feel that a diff fluid change is a smart next move as I haven't done it in a very long time. What fluid is the best fluid to go back with and does anyone have any suggestions to make this easier? I know its pretty straightforward already but any tips are greatly appreciated.

How many miles since last differential fluid change?

 

[2001LC]

Gear lubes.

I use the following schedule:

The Transfer case with bottle pump, 1.4qt, torque 27ft-lbf, every ~20K miles.
The front differential easiest with hose dropped down from engine bay, 1.7qt, torque 36ft-lbf, every ~25K miles.
The rear differential straight from the M1 1qt bottles by dropping spare tire, 3.45qt, torque 36ft-lbf, every 30K miles.
I change all washers (gaskets).

Change interval is based on when I've note M1 75w-90 gear lube color darkening.

Note: City driving 50/50 HWY/City Street.

Gear lube in this picture is conventional with only ~15k miles use from transfer.

This is synthetic lube (M1) after ~40K miles from read differential. (after three flushes with synthetic)

 

[shiretowndown]

Looking at this PM job for this weekend.

what sizes are my diff and tcase plugs? I have an ‘06 LX.

I have read both front drain and fill plugs are T55 hex?

what about Tcase and rear diff plugs?

 

[danielharro]

I have been using Delo Synthetic 75W-90. It is 20% off and free shipping for a case of 12 so that brings the price down to $6.67 per quart almost half off anything else!

Delo Syngear XDM SAE 75W-90 Quart Case | Gear Oil | Product Category | Shop Chevron Lubricants (US)

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