ha ha that old chestnut ! I think you will find that there has been numerous threads on here regarding oils. Try the forum search option, there has been some absolutley cracking debates on this topic. My 2 cents is, I use delo 400 and am happy with it but I change it very often.coleryan said:Jusst bought a 2010 husaberg fx 450 just going to go for first ride tomorow. What are u guys running for engine oil ?