Ok, i've a shit ton of threads about what gear oil to throw in a manual tranny and would like to get 1 thread w/opinions of redline mt-90. I know that ChuckH a fellow club member had problems w/it and i trust him, but i would like to get more opinions on the topic to make sure his wasn't an isolated case. The concern i have is w/hardshifting etc... Thx for any input

Im using Amsoil in my manual tranny.

What about automatic transmission. I cant seem to find a solid straight answer on this as well

*bump* surely some of you have put in redline mt-90 to a manual tranny......

Has anyone tried this oil in a 2005? Manual states that it can use a 75w90 as well as a 75w85 gl-4 oil.

Just filled mine with Royal Purple 75w90 GL-4 from Napa Autoparts. The MT-90 was a little more expensive and difficult to find. The only store I found that stocked it only had 2 Quarts.

If you are doing it yourself, make sure to get yourself a pump of somekind to pump the stuff into the fill hole. You can't get to it with the bottle alone.

Edit to add: My tranny now shifts like the day it was made. I guess leaving it to 80k miles probably wasn't the wisest idea! The stuff that came out was pretty black, but only a few small iron filings on the drain plug magnet, so don't think there is any damage in there. I'm planning on changing it again in another 10k miles, to flush out the rest of the old dirty stuff.

I'm using Royal Purple.

But I am also curious about MT-90. I remember reading here a long time ago that Redline suggested a 50/50 mix of MT-90 and MTL (I think) for the Xterra. Has anyone tried that?