Fluid ideas

[Frankenchevy]

I’m wrapping up an install of an nv4500 into my K30 which also has an np208.

I have concerns over the horror stories of failed seals and fluid mixing. I’m trying to find a fluid that works in both. When searching the interwebs, most of the ‘experts’ go on about if you can’t afford the right fluid blah blah carbon fiber synchros blah blah blah.

My tranny has new internals, no fiber synchros. In fact, if you have an nv4500 that was built in the last 5 years, it likely has all metal synchros.

The company that built the trans recommends Valvoline Synchromesh MTF. They also will accept Dodge’s new recommendation for the nv4500 which is Mopar ATF+4(neither mopar nor gm carry the original fluid any longer which was Castrol Syntorque).

I mentioned to them that I like the idea of the mopar atf+4 in both the trans and tcase for mixing purposes. He said, “Yep, that’ll work...but you could also use the valvoline synchromesh in both. The transfer case will probably like it better!”

At this point I think these guys really like Valvoline Synchromesh so I asked, “Do you guys rebuild old transfer cases?” Hey replied, “Yep!”

Then I said, “So you’d have no problem warrantying an np208 you built with Synchromesh?” To which he replied, “No problem!”

So what say you? What would you guys do?

 

[idahovette]

Do you trust this guy on the phone to back up a claim if you have one? Not saying they wouldn't, but I personally would like to have it in writing, just to be on the safer side?

 

[eskimomann209]

That call was recorded for monitoring and training purposes!

 

[idahovette]

OH!!!......OK!!!!! That makes it better?

 

[eskimomann209]

I know whenever they need the call as proof they can unbury it from 27 years ago. But if it benefits me it’s been lost. LOL.

 

[Frankenchevy]

I record all calls. I learned that lesson the first year I was in business. I live in a single party state, meaning only one party has to consent to the recording. However, the company that built my nv4500 is in Kentucky. Shipping my 208 out there for a failure would be a giant pita.

Not to mention, since the current condition of my np208 is unbeknownst to them, they wouldn’t be on the hook anyhow.

I’s just curious if anyone had tried anything other than modern dex atf in their 208...

 

[SquareRoot]

You can still get the castrol stuff thru Summit. I recently purchased a whole case of it. It's sold under AC Delco, just like the dealer.

 

[Frankenchevy]

You can still get the castrol stuff thru Summit. I recently purchased a whole case of it. It's sold under AC Delco, just like the dealer.

...but can you use it in a 208?

 

[SquareRoot]

At $18 a quart I wouldn't. In my case, the 205 will be replacing the 208 in the not to distant future.

 

[Rusty Nail]

I'd run the Valvoline in a heartbeat and not give it a second thought.

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Valvoline makes the best transmission fluid - I also use Valvoline motor oil .