Which Redline Oil to use for Diffs and Transmission

[Kraze]

I'm bout to order fluids to change everything in my truck. I know it would work with the diffs and transmission but would the 75W90 NS GL-5 work well with the transfer case? Emphasis on the NS part.

I'd like to know this too. I'm planning on doing all fluids this weekend, and was under the impression that it was fine to use the same stuff on the diffs and transfer case.

 

[paraplan]

Hi guys!

I need an urgent advise. I have 2005 T4R V8 Limited. I just changed the fluid in all 3 boxes: front, rear diffs and transfer case to synthetic Red Line MT-90 75W90 Gear Oil. I got it here: http://www.fcpeuro.com/products/gear...FZJbfgodIEMAqA
I just noticed that this fluid is rated as GL-4 where as the manual suggests GL-5 type fluids. I'm not sure what to do at this point, do I need to drain this fluid once again and use the correct stuff or having GL-4 is just fine?
Please help!
Big thanks in advance.

 

[02SE]

I wouldn't run it in the front diff or rear axle. I would drain those and run Redline 75w90 GL-5.

Using the MT-90 in the transfer case is okay.

If you're concerned, call Redline Oil, and talk to Dave to see what he recommends.