AFter a ton of reading on BITOG i think i am going to switch to a HDEO oil after my valvolin motor cycle oil runs out. I have seen these motorcycle oils' VOA's and UOA's and for the $$ they are crap. the HDEO's like Rotella 5w40 (synthetic) and Rotella 15w40 (dino) are so much better. seems like tons of folks on that site use the rotella in their manual shift atv's.. what do you guys think?? i have noticed the valvoline shears like no tomorrow in an air cooled motor.