Mick! Whats the bike for, if its like MY R and for fun only try some 208GP's FCUKing awsome, the SE im selling has a fresh set (well nearly) of gpr70's there good, but no where near as good as the 208's for feed back and cofidance new there expensive, i managed to get a set from ebay for 50, few and far between but can be found if you wait, else there £230 a set... i also stick to 150 and a 110 i tried a 160 and it slowed the bikes turning down. As for oil ....What was in it before? try and stick with wahts there, but for referrance im using Castrol TTS i have no comment other than i guess its working, Friend uses A747 SMELLS wonderfull but its premix only and should mix on the day your riding.. Hows the bike she looks nice!