i was wonderin if there is anythin wrong if i put 10w 30 oil in my 140xxxxxx miles gsr?i was thinkin i might need thicker oil since i like smashin all the time.. i have all boltons on my car .. if any have tried this let me kno.. i did some research but couldnt find any help.. so someone plz help ..thanks h-t

 

5w30 or 10w30 is fine.. Since you have high mileage i'd recommend running valvoline maxlife