I lost the instructions for the install and wondering if anyone knows what gear oil to use with the powertrax no slip locker ?

 

pretty much any appropriate gear oil will be fine, as long as it has the additive for the non slip. personally i use royal purple. my posi wasnt working when i bought the car and i just thought it was fried, until i started using royal purple gear oil. now it works like a dream.

 

Well theres 75w-140 and 80w-90. I'm leaning towards the 75w-140

 

i use 75w90

 

I put 75W140 Amsoil in mine to try to reduce the noise. It also helps with the towing that I do. This is in my S10 4X4.

 

I found the install guide online.
http://www.richmondgear.com/0002pdfs/8221022A.pdf
It calls for 75w140 so thats what i'm going with. Was going to use royal purple gear oil. Is it worth it or just alot of hype ?

 

ive seen a lot of car shows on tv do actual dyno testing with royal purple(usually just engine oil) and they always see an increase of a couple horses over other brands. i swapped all my fluids over (engine oil, trans fluid, and gear oil) and i noticed a difference.