I bought a 2012 TRX400X yesterday. The dealership said to change the oil/filter after the first 10 hours and then follow the manual after that. I plan on running Rotella T6 5w40 in it since it is JASO MA certified. I was wanting to run AMSOIL but their powersport 0w40 looks to be "recommended" but not certified for JASO MA. The AMSOIL motorcycle 10w40 looks like it might be certified for JASO MA but I can't tell with their verbiage. Normally I would not care about the oil being certified but I have the factory warranty for the first year. I plan on running Wix oil filters in it.
Surprisingly I do not plan on modding this thing as stock trim is plenty for me. The only planned change is nerf bars to keep my feet safe.
Surprisingly I do not plan on modding this thing as stock trim is plenty for me. The only planned change is nerf bars to keep my feet safe.