Icalled a Honda dealership today and the rep there said that Honda was now recommending a 10w-30 oil,said it was about $6.00 ,price doesn,t make any difference because as you say what am I going to change it once a year! Now I am just concerned with the best for my Rig and my conditions. Narrowed it down(lol) to Rotella 5w-40 T6,Valvolene 10w40 atv or motorcycle oil,Honda 10W-30 oil.price means nothing,out of these three which one ? Honda Foreman 2009 Manual shift Hey while we are at it do I need a special oil for the air filter? and which gear and differential oil?