NV4500 Castrol SynTorq?

[BigPapa]

First, I’ve heard bad things about High Gear and would not use them myself.

Second, I don’t see anywhere on that chart where they’re recommending anything for the NV4500 besides Mopar 4637579 which is the Syntorq.

 

[AH64ID]

the reason i mentioned the Valvoline product is because this web site.
https://highgeartransmission.com/wp-content/uploads/2018/07/HG-FLUID-CHART-2018.pdf
They rebuild these transmissions and recommend the Valvoline product.

Just and FYI.

They don’t even list the NV4500 by name under Chrysler/Dodge, only GM. Seems like they have too broad a paint brush for their job. That’s just my initial impression of the pdf.. they may have their act together.

The Valvoline Syncromesh is pretty then when warm, much thinner than a GL-4 75w-90.

 

[BigPapa]

 

[AH64ID]

View attachment 126132

That’s the list of factory fluids, not their recommend Valvoline fluid. Scroll down for that. NV4500 isn’t listed for Dodge with a recommended fluid.