ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 25 Bottle Pkg Case

The components of ZDDP were removed from diesel engine oil to accommodate catalytic converters. It can be added back for anything without a cat converter. Therefore my diesel boat gets ZDDP. Good for gas engines also so my 94 Suburban with the cat removed get a dose. My 1958 Cadillac and 1949 Power Wagon get a dose also. I'm 66, I expect these to last my lifetime.

Something my dad bought!

Good for Model A engines.

good

This is a chemical not a blouse