Engine/Transmission (1998.5 - 2002) NV4500 life expectency?

[Ray Torresdal]

How many miles are you getting on your NV4500? I don't tow heavy often, but it has happened. I don't have huge power (dynoed 290/790), and use it carefully, I also have the coolers hung on the sides. I have 286,000 miles, and am wondering if I should do the transmission as "preventative maintenance", or if I've made it this far will I be good for 500,000???



Thoughts?



Thanks!



Ray

 

[hsmith]

I would say you are better than most at that mileage. I had mine gone through at 180k as I was having problems with reverse due to previously losing 5th. Caused undue thrust wear and 5th gear was gone.

 

[Bob4x4]

Broke 3rd gear in mine... ... ... ... less than your miles and never towed heavy. I also have the fast coolers. Normal oil change intervals.



Bob

 

[Ray Torresdal]

Bump - Anyone else with thoughts?

 

[BEmmert]

185,000 on mine and have only changed the oil. About 330hp, but I am real easy on it in hopes of making it last. Have towed upwards of 30k from time to time and so far (cross my fingers) so good.

 

[MAllen1]

I have 229000 on mine without coolers and not a problem. I only have changed the oil once since 100000 with amsoil. On the same token, the only time I even remotely have a problem is when it's real cold, it's a little tempermental.

 

[AllianceDiesel]

when I was looking at truck I wanted either a 5 or 6 speed, every 5 speed either had a bad 3rd gear syncro, had it replaced, or the dreaded 5th gear nut was either bad, or replaced.

 

[BPINE]

Melted 3rg gear in mine (I tow about 23k combined most of the time) at about 125k. One thing I have learned after replacing the trans with all the 3rd and 5th gear upgrades is that the fully splined main shaft it not a fix all to the 5th gear falling off so don't fool yourself in thinking it can't happen after spending all that money.

 

[SHobbs]

I have 232k miles on mine, fluid ( R. P ) changed every year about 24-25k miles and have floated it every shift up or down towing or not. Still shifts like it did the very first day.