Tranny fluid
 

what kind of transmission fluid would yall run in a 2000 5 speed i think its the NV4500 tranny ive been getting some from the dodge dealer and its 25 bucks a quart anything cheaper

5w 30 motor oil

contact Heath and get the amsoil for it. it's less than that and good quality. you want to run a synthetic. I am getting ready to service mine as I just got the truck a few months ago and would feel better knowing the condition of the oil in it. I am pretty sure you can pay less than half that getting the amsoil shipped to you.

The AMSOIL is severe gear lube and works great in these trannies.

according to the product look up page it's Manual Transmission & Transaxle Gear Lube 75W-90

PRODUCT DESCRIPTION
AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube (MTG) is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in the most demanding manual transmission and transaxle applications where an extreme pressure GL-4 gear lube is specified, including those where high horsepower/high torque engines and towing or heavy loads increase transmission stress.

AMSOIL MTG helps prevent the thinning effects of mechanical shear. It is formulated to maintain its viscosity and superior film strength for consistent, long-lasting wear protection. AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube excels in hot and cold temperature extremes that exceed the limits of conventional mineral oils. It protects against rust, keeps seals soft for long life, and is compatible with brass synchros for smooth synchromesh shift quality.

Ideal for NV-4500 Transmissions
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a thermally stable, extreme pressure formulation that resists heat, oxidation, acid build-up and varnish. It is the ideal gear lube for high temperature applications, including the New Venture NV-4500 transmission, which retains heat due to its cast iron housing and is often subjected to heavy loads and high torque from turbo-diesel engines.

AMSOIL MTG is the replacement fluid for GM part #12346190 and Chrysler part #4874459 (Chrysler specification #MS-9070).

in an NV4500???

NOTHING but Syntorq (sold by dodge and GM as well as quad4x4), amsoil Synthetic Manual Transmission and Transaxle Gear Lube 75W-90 API GL-4, or the royal purple (or redline, don't remember.) But nothing that's not GL-4 or it will kill the synchros.

I can't find the link on the science behind it, but if I find it I'll post it up. It is important that you run the right shit.

tried the 5w-30 motor oil, on long trips with heavy loads the tranny would overheat, and with the 75W-90 gear oil the gears were so heavy i could barely move em it calls for the syntorq but i cant find it anywhere any idea on where i could get it

What about Synchromesh ?

Too thin. Last bottle I had my hands on had the viscosity of engine oil

ABSOLUTELY NOT !!! Thats for the NV-5600 and I wouldnt even run it in that tranny.



As already said, for an NV-4500HD you need a GL-4 rated tranny fluid. The only 2 options here are Castrol Syntorque or AMSOIL MTG. I would go with the AMSOIL as its half the price or less, and just as good. (think its around $11 or $12 a litre)

As already said, for an NV-4500HD you need a GL-4 rated tranny fluid. The only 2 options here are Castrol Syntorque or AMSOIL MTG. I would go with the AMSOIL as its half the price or less, and just as good. (think its around $11 or $12 a litre)[/QUOTE]

gl-4 thats any 80 90w gear oil not synthetic you can get synthetic but penzoil and almost all the manufactures make gl4

dodge states synthetic only for the trans.

the Chevy dealer is cheaper than the dodge dealer

I wouldn't put anything but Castrol Syntorq in it. That MTL was specifically developed for the NV4500 because it has serious heat issues running behind the Cummins. Mopar and GM who both use variants of this gearbox in HD applications both have specific part numbers for this fluid for this reason. I'm sure the Amsoil stuff is a great oil, but I wouldn't trust it.

I was told the same thing about the fluid in my 5spd accord only use dealer oil, the same thing a friend was told on his 5600, and they both have amsoil and both shift as good if not better than before it was changed. I will be servicing my trans in the 99 prob next week. I will let you know how it works.

that is true, castrol specifically developed that fluid for the nv4500. however the amsoil was specifically made to replace that castrol. I have ran both, I honestly can't tell a difference, but the ams is a lot cheaper for me.

Do you tow alot? Only problem is you won't know how it works until after a year or 2 down the road and you end up with either a good, smooth-shifting tranny or a rebuild/replacement for the one that ate up the syncros and bearings.

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Source? Amsoil makes all types of lubricants that cross lines all over the automotive world. Just because they tell you it fits an application doesn't make it entirely true. They did not pay Castrol for the R&D and testing to make Syntorq work for the NV4500, Mopar and GM did.

You initially said in your post above that you can use 5W30 motor oil in a NV-4500HD.

This transmission is very picky on fluid and using the incorrect fluid will quickly damage the carbon fiber synchros. Thats why the only real options are The Castrol and Amsoil.

regional amsoil rep, will try to find documentation.

I have just order mine from amsoil looking forward to it. Whats the best way to fill the tranny up?

I found taking out the fill plug, taking out the stub and pouring through there. then have someone watch for when its full. Put plug back in and overfill 1 quart.

Quick question I am planning in changing the tranny oil on this truck its got the nv4500 just like mine. I am currently using amsoil on mine but was curious about the Mobil Delvac Synthetic Gear Oil 75W-90 will it work on it ?

synthetic motor oil works good

What?

Synthetic motor oil in a NV-4500 transmission? Im sorry but this is misinformation.

NO. you can ONLY run ams, RP, and castrol (also comes in dodge and gm bottles)

Specifically:

Redline's MTL, RP's Synchromax LT, Nissan's MTL, Honda MTL, Castrol Syntorq LT

Those would be the only acceptable fluids for the NV4500. Notice the "LT." Not the regular RP Synchromax. It has to be a full synthetic 75w-85w GL4 MTL. No substitutes.

and AMSOIL MTG "Formulated specifically for maximum protection in the most demanding manual transmission and transaxle applications where an extreme pressure GL-4 gear lube is specified, including those where high horsepower/high torque engines and towing or heavy loads increase transmission stress."

Yes, I forgot about the Amsoil.