MPTZDDP Zinc Additive - for Superior Engine, Transmission and Gearbox Protection - 4 Fluid Ounces

I was informed by my mechanic to add this to every oil change. I recently had my Engine swapped out for a rebuilt in my Jeep Wrangler 244K miles. He said this will help keep the moving parts from wearing out faster than if I used today’s modern oil only.

I liked that this is only a 4oz so you can add it to a full tank. It seems to work well for me.

I am going to use this on my 1949 ford

This is a must have if your engine has flat lifters/tappets. Since the government mandated the elimination of zinc from motor oil flat tappet engines have suffered accelerated cam and lifter wear.

It is the same amount found in a good t4 oil .they don't say in the site how much zinc is in it .till you buy it. APPROXIMATELY 1000 -1100 PPM on the back of bottle .And you can't send it back..

Not sure if my motor really requires this additive but it will not hurt and gives me peace of mind. I would not run it in my newer stock vehicles.

Hard to know if it's working, but I need zinc in the oil of my classic car, this brand was recommended by an engine builder.

I have been adding this product for years for extended engine life