What engine oil are we using, I have recently fitted a 750cc engine (Smedspeed) with a 277 deg rephased crank, and I am interested in what members are using in their engines, I have always been a Putoline user. and i have noticed this Putoline oil N-TECH V-TWIN PRO 15W-60 fully synthetic, possibly suit a rephased engine, I know the manual recommends SAE 20w/50