I bought a used Outty 650 XT 2007 with 170 miles on it. We put it over 200 this past weekend. I plan to change fluids on it this weekend. I bought Amsoil 0W40 powersports synthetic motor oil for the engine, Amsoil 75W90 oil for the differential, and Dexcool 50/50 for the rad. Is it a good idea to change the gearbox oil as well? I priced up the oil from the dealership and it was $20 which is quite steep if you ask me? Should I change it? If so, or even if not, how often should it be changed? Thanks in advance.


EDIT: I have found a lot of bad information regarding Texaco's Dex Cool and a class action law suit. Is this the same as the Zerex Dexcool that I bought? Have the ingredients been changed so that it doesn't cause problems if it is does anyone know? Thanks.

 

i would just check it and see if its dirty or not... cant see it with only that many km. i change mine every 500km or so depending on how much mud ridin i do