Lucas Response To Zinc Additive

megajoltman said

I use GM Engine Oil Supple-ment (E.O.S.) carries PN 1052367 Available from GM dealers for about $10 per bottle for my my solid cam engine.

Click to expand...

I tried to buy some of that about 2 years ago & they wanted about $16 for it at the dealership. Even the guy behind the counter said he didn't think it was worth that much. I still think it's good stuff though.