Transfer Case, Differential Fluid Change

[mwebster22]

I'm sure I'm being too picky here, but is there any reason not to put 75W-90 in the rear differential like in the front diff and transfer case? I'm going with mobil 1 synthetic gear oil in my '06 Sport V6 4WD. The Chilton manual says 75W-90 in front diff and transfer case, and 90W in the rear diff above 0F. Mobil 1 doesn't make straight 90W. Tell me not to worry and just put 75W-90 in all three...

 

[CJ3Flyr]

Tell me not to worry and just put 75W-90 in all three...

Ok, don't worry, just use the M1 75w-90 in all 3.

 

[obxfishn]

I'm sure I'm being too picky here, but is there any reason not to put 75W-90 in the rear differential like in the front diff and transfer case? I'm going with mobil 1 synthetic gear oil in my '06 Sport V6 4WD. The Chilton manual says 75W-90 in front diff and transfer case, and 90W in the rear diff above 0F. Mobil 1 doesn't make straight 90W. Tell me not to worry and just put 75W-90 in all three...

Thats correct...just use Mobile-1 75W-90 in both diffs and X-Fer case. That same question I asked my Toyota Service dude. Mobile-1 is the way to go.

 

[jharris2]

I'm sure I'm being too picky here, but is there any reason not to put 75W-90 in the rear differential like in the front diff and transfer case? I'm going with mobil 1 synthetic gear oil in my '06 Sport V6 4WD. The Chilton manual says 75W-90 in front diff and transfer case, and 90W in the rear diff above 0F. Mobil 1 doesn't make straight 90W. Tell me not to worry and just put 75W-90 in all three...

That's what I did 20,000 miles ago. No issues at all. And the truck shifts into 4WD faster than it did before the change.

 

[Will_4R]

TSB DL003-07 states that is ok to use 75W-85 GL5 synthetic oil in the front and rear diffs. I assume it is also ok to use it in the t-case.

 

[ALLEGRO]

Mobil 1 for me in all three cases...eerr make that 4 !

 

[mwebster22]

Where can I get free access to the tsb's?

 

[CJ3Flyr]

Where can I get free access to the tsb's?

The sticky at the top of the 4th gen section.