fluid changes

[trevor95f350]

well winters on its way so I figured its time to change out my fluids, wondering what people on here recommend?

I want to do the front and rear diffs I was thinking synthetic 80 90 same in the tranny (its a zf5) and running tranny fulid in the t case.

Thanks

[jesilvas]

Synthetic never hurt anything. As long as it's 80/90 or 75/140. Syn ATF in the Tcase is always good too. Basically as long as it's cleaned out good and you get fresh fluid you're good to go.

[pjwoolw]

Don't the zf5 trannies use atf too? 80w 90 gear oil might be a little heavy for your neck of the woods. At least in the tranny.

[jesilvas]

I'm gonna retract that previous statement. I just don't know

[pjwoolw]

I'm sure ATF is recommended for that tranny. If it were mine I would run Redline MTL. In the cold (where you are) anything heavier would leave you cussing waiting for it to warm up so you could shift (been there). Might damage the transmission too.

[350ninty7]

Diesel performance Shop that installed my new South Bend Clutch changed the Manual Trans fluid with Mobil 1 ATF Synthetic.
165,000 miles and it shifts sweet........