Well i've spent the past few days wrenching on the Z, blew the motor a week and a half ago. First of all im really amazed how clean my TT engine with 70,000 miles looks internally rather than my N/A that was rebuilt 20,000 miles ago. For the TT i used castrol full synthetic and castrol regular for the n/a: Big difference! One of the biggest shockers so far while i've been tearing the TT down to its bare block is that it has oil squirters! I know that only the n/a's are supposed to have them so im kinda confused at this point lol. Maybe i'll post pics if i dont feel lazy