You really do want zinc, or phosphorus, or aluminum ... that isn't going to hurt the clutch.

The thing it will do is burn and produce a lot of ashy exhaust and clog up the exhaust sensors. You know, the great savage exhaust sensors ... gone, clogged, done ... toast ... yea, every oil change I put new exhaust sensors in the savage exhaust ... because of my oil.

The accel 10W40 is SF rated ... I see your SL and SM ... you seem to be from this century ... sorry ... I am not that modern ... SF ... booya.

The zinc and others of its ilk (copper is a huge favorite over most of the rest, but phosphorus is also supposed to_ are there to protect the plain bearings when oil film thickness starts to get near 0.

But watch out for those pesky exhaust sensors, you dont want any of these getting on them.

Cool.
Srinath.

Yea I hat to replace my cat ... the cat in my hat ... it took the bat and hit me with it rat a tat tat ... I hat to replace my cat.
Cool.
Srinath.