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.
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the Chevy dealer is cheaper than the dodge dealer
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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.
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Originally Posted by NadirPoint
(Post 471406)
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.
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Originally Posted by NadirPoint
(Post 471406)
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.
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Originally Posted by 01quadcab
(Post 471877)
I will let you know how it works.
---AutoMerged DoublePost---
Originally Posted by FastCR
(Post 471882)
...the amsoil was specifically made to replace that castrol.
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Originally Posted by hotcummins
(Post 471327)
gl-4 thats any 80 90w gear oil not synthetic you can get synthetic but penzoil and almost all the manufactures make gl4
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. |
Originally Posted by NadirPoint
(Post 472124)
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.
---AutoMerged DoublePost--- 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. |
I have just order mine from amsoil looking forward to it. Whats the best way to fill the tranny up?
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