Yup Erle, Get mine from the triumph dealer, I use k&n filter as its got a 17mm nut on it which makes it easy to remove and they are excellent quality...shell adance full synthetic comes in 10/40 which my dealer also uses, cheers all, Taddy
As Staffo said DONT USE CAR OIL IN A BIKE,IT STUFFS WET CLUTCHES BIGTIME