that depends on which tranny you have, for the NV4500(5spd)
75W-90 Castrol Syntorque Synthetic
Mopar Manual Transmission Lubricant (PN 4637579)
GM Transmission oil (PN 12346191)
for the NV5600 (6spd)
Texaco Code 1874 MTX
Dodge spec MS-9224 oil
Amsoil Series 3000 5W-30 engine oil
Actually for the 5600, Amsoil has a "MTL" specifically for the manuals now...no need for 5w30 oil...if his owner's manual is like mine, there is no scheduled drain for the 5600. I'm going to run Royal Purple SynchroMax in mine...Pennzoil is probably the easiest to come by in the local parts house...Pennzoil Synchromesh.
And the auto uses chrysler specific ATF+4 now...which I believe Amsoil ATF also meets the specs for ATF+4 as well.
Has anyone had any trouble with using this? "Amsoil Synthetic Manual Transmission and
Transaxle Gear Lube 75W-90 API GL-4" in their NV4500? I was looking at my trans, and it has a warning sticker on the side saying that if you use anything other than the 3 listed choices (Castrol, GM or Mopar) that "sever damage can result" [sm=confused06.gif] Is this just BS or has anyone used the Amsoil Trans Lube in theirs? Thanks for the input.
Mike. . .the answer is yes. I've seen pictures of a 5600 where the wrong oil was used and the bearing races were shot, bearings themselves were pitted, and the syncros were shattered.
then on top of that, New Venture Gear is no longer in buisness, New Process bought them and the patents they held when DC moved from NV to the G-56. long story short, parts for the NV35, 45, 56, and other trannies are in shorter and shorter supply. the only way to keep the tranny happy is to use the correct oil that is specified.
now in the next 2K or so miles I'm gunna need to change all the fluids. I have a source for all the AMSoil oils I need for a good price so I'll be able to tell how much different the AMSoil is over what I'm useing now.
I already have AMSoil in the engine of my taco and I can tell a little difference in the way the engine runs. I like it and will probably continue useing it.
4/28/07 392hp 716tq on the stock clutch
10/20/07 425hp 798 still on the stock clutch
BIG THANKS to David and the guy's at James O'neal Dodge.
YOU GUY'S ROC
Thanks Drew, glad I asked! I am planning some mods, and I was considering doing a bumper to bumper switch to synthetics, so I did a search on the Amsoil website and according to their build list for my 98.5, it says to use the Amsoil Synthetic Manual Transmission and Transaxle Gear Lube 75W-90 API GL-4 in the NV4500. So I am just trying to be sure I am understanding you rightly. You are recommending going with what the NV sticker says only then? I noticed in your post earlier you had listed Amsoil use in the NV5600, but not the NV4500? Is that because of a difference between these 2 trannys? I have seen differing reports (mostly good) on Amsoil use around the web, and I am leaning towards the Amsoil still, but I surely value your opinion. Was the trans damage you mention from the Amsoil recommended Amsoil or just the wrong oil altogether?
My tranny took a dump on me when I bought it and the previous owner changed it with gear lube. Bearings siezed, cracked shafts, all that good stuff. After a shop rebuilt it and put GEAR LUBE BACK IN IT, it was shot again 1000 miles later. Granted it was Amsoil gear they put in it, but definetly the wrong type of oil. However, I run Amsoil in the engine and the correct Amsoil in the tranny with no problems anymore. If needed, give a call to the Amsoil reps and they will set you on the right track.