Hi, Nietzsche, you could put whatever's available, personnaly I'd go for 20-50 as long as it's syntetic since the engine seems to run hot. As for gaz, I decided to try 87 octane today since it is at 133.4 these days around here, I saw no ill effect whatsoever. How thing's are in your part of the world? How about some pic's !!! See You.