What brand of oil do you guys prefer to run through your motors?

 

I run Valvoline Durablend Synthetic... 10W-40.

 

I use Yamalube now & will switch to Semi Synthetic Yamalube after I get around 100 hours on it.

 

Valvoline VR1 20-50w Race oil (clutch no longer slips)
Used to run Amsoil 10-40w Synthetic (clutch would slip)

 

Spectro4 10/40. Golden Spectro 10/40 after break in.

 

10W-40 YamaLube or the Honda equivelant.

 

Castrol full synthectic made for V-twin bikes. No clutch problems. Oil won't break down-even in alky or race gas engines. Excellent wear. Made for long runs at high temps in air cooled engines (works for liquid cooled also). I also use 2 ounces of Energy Release per quart of oil. ER is amazing! Less wear, more power!

 

I run yamalube 20w-40 b/c I got some free w/ my bike.

 

I use Yamalube now. I used to use the semi-syn but I had a clutch go out,kinda, on it. I have recently been hearing alot about Honda HP4, at like $6.50 a quart it better be good. Anyway I was thinking of making the switch.

 

Crisco or wesson[img]i/expressions/face-icon-small-wink.gif[/img]

I use yama regular 20-40 and a ac filter