Engine/Transmission (1994 - 1998) NV4500 gearlube change interval

[alaskagrizz]

I have been trying to find the recommended time interval to change that "liquid gold" gearlube known as Castrol Syntorq, thus request input from those of you in the know. I have looked at the recommended maint. intervals in both my DC Service Manual, Owners Manual, as well as searching TDR without success. I thank you fellow TDR gearheads in advance for your feedback.

 

[JJW_ND]

40 - 50K

Even with moderate pulling, 40 - 50K works out fine here. I have each sample tested. Nothing out of line with 40K on a sample of Amsoil Series 2000 75W90. I have aways had a temp gauge in mine. Never has seen over 200... . Ever.



Those that run hotter might consider a sooner interval. Those that never pull anything, would probably be fine with 75K changes.



jjw

ND