[GREASEMONKEY72]

if its the original engine you should be running 20-50w oil and if its whiteish smoke it probly is the vavle stem seals, i had the same problem it would smoke a bit on start up and if i reved it so drive it around a bit get it up to temp maybe get on it a few times and clean/run it out then when you get back shut it down and let it sit a for a while then restart it and see what happens and for what its worth the valve stem seals arent hard to replace its just time consuming and you should take your time and do it right

goodluck