I was told if I change my diff fluid my tires won't spin as much when trying to get traction in snow. My question is how long can it go before change. And do you recommend syn fluid, and about how much does it take? Oh and how hard is it?

 

huh ? assuming you have an open diff (no lsd), or a properly working lsd, i think, that's ummmm... ridiculous.

if you drive through creeks and/or deep water, you should change it regularly to make sure you don't have any water in there. otherwise, every 24k-48k should be fine. it takes about 2 qts. i think synthetic is a waste of money, but that's just my opinion. easy to do, just don't bend the cover when breaking it loose. if you have a limited slip, LSD, you need the little bottle of friction modifier for the clutches.
http://www.pavementsucks.com/tech/diff.php

the only thing that will help your traction in snow is extra weight in the back, less snow, better tires, working lsd or locker, snow chains, sand, kitty litter, or cinders.

 

LOL! I was going to say the same thing, But I'm also not replying when there is little or NO info about the vehicle.

106 posts and not even the year of the rig! LMAO

 

I change mine every tune up, I use the Lucas oil 80w-90. I figger if I am already unde there I might as well.

 

hahaha, hell i just guess ! even guessing at what kind of truck he's got i can give better advice than what he's been getting.

 

I hear ya , but I'd rather not give any more wrong information then I already do! LOL