primerk5
1/2 ton status
I normally run 90 wt, (gear oil) Though a friend says to run Trans fluid. I'm thinking gear oil is what should be in the t-case.
CK5
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What oil do you run in your t-case np205
- Thread starter primerk5
- Start date
sgarrison
1/2 ton status
If its a cast iron case, like the 205, run gear lube. If its an aluminum case then trans.fluid should be run.
NP205 takes 80w90, period.
I run Sythentic 80w90 Mobil 1 in mine.
I run Sythentic 80w90 Mobil 1 in mine.
primerk5
1/2 ton status
Cool, Gear lube it is! Thanks
"Run trans fluid" comes from the fact that later on that's exactly what GM did. (My '91 205 came that way)
Makes it a bit less of a problem if the seals fail on an auto trans application, since the fluid won't be contaminated, but other than that, it's pointless to run ATF.
Makes it a bit less of a problem if the seals fail on an auto trans application, since the fluid won't be contaminated, but other than that, it's pointless to run ATF.
mrdrinksalil
1/2 ton status
I have a NP205 and a TH400. I thought the 205's behind autos should have trans fluid... I dont' think there are any seals between the tranny and the transfer to keep the fluids seperate. Now I'm confused...
I cant speak for the autos but my sm465 has a seal in the adapter to prevent its fluid from getting into it. The t-case side doesnt though. My truck is an '83 and came with the 465/205 setup. The factory manual says to use ATF in the case. I use synthetic 80-90w.
