This landed in chat from a new member. A professional mechanic that has a customer that wants him to research available kits, mods, etc.
@cruiserbrett feel free to delete this thread.
I always add ZDDP additive when I change oil. 2 little bottles. STP makes a ZDDP additive and I think amsoil does too. Some diesel engine oils have zinc in them. There are oil politics that I don't care to engage in, though. Most important thing IMO is to never neglect oil changes. The only...