Whats everyone using? My local dealer wants 20 bucks a quart. Is there something else out there. My napa guy said i could use Vavaline synthetic 90wt, and be ok?? Thanks Chris

 

I won't use anything but the reccomended SynTorque. It is expensive, but so is the truck... Long term the Valvoline won't be good for the synchros.

 

I get mine from quad4x4.com its 27$ for 2 quarts of the casteroil syntorq. Cheapest I've found so far.

 

Syntorq, not Syntech. I've also heard, and may change to, Amsoil for the NV4500 tranny https://www.amsoil.com/StoreFront/mtg.aspx . Supposed to be realy good and less exspensive.

 

if you do use the amsoil let us know how it runs. I know the syntorq is the only aproved oil for the 4500. I think i heard once something about some kind of odd syncros the 4500 uses?

 

Amsoil works in the nv4500 I have had it in for about 30,000 miles. The reason for speacial oil is, the syncros are made of brass or that is what my understanding is. Which is why a GL4 oil is recomended. If you use the wrong oil it will deteriate the brass syncros.

 

i am told the wrong oil also eats the rear oil seal up also. i bought my oil at dodge i think it was 15 to 17 bucks a quart. cheap compared to the work i just went thru changing trans because of rear seal leak.

 

So this Vavaline synthetic 90wt is not a good idea??
When my 5th blew, it left behind some chuncks of metal and mybe little shavings that are hard to find. I tried to wipe out as much as i could with a rag and magnet, but i want to do a second change.
Could i run this Vavaline for like 100mile or some then flush it and then use the good stuff, or will that little bit of driving hurt it?? Thanks for the help- Chris.

 

I run valvoline for now

due to a slow leaking gasket. I have had no issues whatsoever with it at all.. works good

Rick

 

I work at a transmission shop and we use Amsoil as a replacement.

 

I use Amsoil and no probs so far.

 

You can try the chevy dealer as a cheaper source of the syntorque fluid, they used the same tranny.

 

I ran amsoil for 122K no probs. Syntorq is a rip off. I replaced the seal you are referring too when i put amsoil in.

NO PROBS

 

My feeling is anyone who runs anything other than Syntorq is just plain foolish, trying to save a dime on an expensive transmission. Syntorq is great stuff, the tranny was designed around it.
You can buy Syntorq by the gallon for $54 here http://www.standardtransmission.com/dodge.html

 

i have been running amsoil in mine for 50,000 miles,no problems