Proper fluids?

[p8nt]

I know there are threads addressing this, but I was wondering if there is a conclusive, "Definetly use this...", "This fluid is the best...", "Always use this stuff", type of fluid for the trans, xfer, birfs and diffs? There seems to be a wide range of thoughts, but nothing absolute. Any ideas?

 

[Doc]

No.

FAQ at the top of the page. Use your own discresion.

 

[Grench]

Its personal choice and philosophy for the most part.

I plan to service mine regularly and would not benefit from the 'extended life' from synthetics. I figure synthetic or regular, a clogged filter needs changed.

In no particular order...

Valvoline 5w30 (I used to do this year around, now just winter.) I plan to go to 10w40 in the summer.

80/90 gear lube in a 5 gallon can from O'Reily's. I'm planning on changing the gearing in 1.5 to 2 years, so it should be just fine. 5 gallons??? you ask? I have two of these trucks. 3.5 qts front & rear and ~3 center =~ 2.5 gallons or so per truck.

Lithium bearing grease in the axle bearings, trunions, housing, etc.
Moly grease in the birfs from Mr. Longfield packing them.
Waterproof synthetic grease in the U joints.

Toyota Red Radiator

I've never replaced the fluids in the brakes, steering or trany. I'm due.