Hi everyone. I've restored a couple of classic motorcycles and am thinking about moving on to doing a 60's or 70's Chevelle, Corvette, Charger etc... Anyway, I've been cruising all the classic car forums and there's always a couple of forums regarding ZDDP for the flat tappet cams etc.... It always boils down to find a CI-4 diesel oil like Delo 15-40 or Rotella etc..... Then someone will just say use a regular oil and add ZDDP in the form of EOS, STP red bottle etc...
My question I guess to anyone reading is why doesn't a oil company just go ahead and make a line of dino oils and synthetic oil with the .12-.13 amount of zinc and phosphourous that everyone is asking for in grades like 10-30, 10-40, 20-50 ? It seems like it would be easy enough. Everyone in the classic car (engine) world would be happy, and it would put an end to the tons of threads out there where everyone is discussing this.
Just wondering. Seems pretty easy.
My question I guess to anyone reading is why doesn't a oil company just go ahead and make a line of dino oils and synthetic oil with the .12-.13 amount of zinc and phosphourous that everyone is asking for in grades like 10-30, 10-40, 20-50 ? It seems like it would be easy enough. Everyone in the classic car (engine) world would be happy, and it would put an end to the tons of threads out there where everyone is discussing this.
Just wondering. Seems pretty easy.