Mobile 1 synthetic....I drove my car harder than shit. It lasted 99K. Shoot it still runs good just has low compression in one cyl. Does not smoke or start hard ect ect, does not burn any oil either.
the full synthetic oil will prevent the motor from being broke-in properly, thats why you dont use it durring a break-in. once you feel everything in the motor is broken in completely then you can start using it.
guys i have not rebuild yet I WISH, but i just went turbo someone told me to go semi syntehtic for a while but do not know how many changes before i go fully synthetic??? and wich weigh should i put.