About ZDDP Plus Oil Additive 4 fl. oz
After 70+ years, the EPA mandated that all domestic motor oil producers remove ZDDP (Zinc Dialkyl Dithio Phosphate) from all conventional and synthetic motor oil. If your engine was designed before 1989, the non-roller lifters still require ZDDP to avoid premature deterioration. Our ZDDP Plus Oil Additive puts back what your pre-1989 engine needs!
(A) Yes.
(Q) Will too much hurt the motor?
(A) No, but do not exceed 8 ozs. (2 bottles).
(Q) Can I use it in any motor?
(A) No, only 1989 and older.
(Q) Will it work in diesel?
(A) No, it will have no effect on a diesel motor.
Customer Reviews
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(Posted on 8/5/11)
Awesome stuff
Review by Baal -
Price Value Quality I started using it in my motorcycles and have immediately noticed smoother shifting and idle. Smoother running at all rpms.
The EPA is out to KILL older engines all for their almighty catalytic convetors.
Screw the Feds, Im protecting my rolling stock! -
(Posted on 5/23/10)
Guess it really works
Review by Birdman -
Value Quality Price Just finished a big block Mopar for a guy. Has a "flat tappet" cam. busted that baby off with good old Penn 30w in it along with the ZDDP. Ran the cam in without any issues at all. Good oil pressure, right on temp, and no noises other than the VVVRRROOOOOOOMMM you expect from a well built Big Block Mopar.
Use it. It works -
(Posted on 1/12/10)
Great Product!
Review by Neil -
Quality Price Value With the higher working tappet pressures of high compression '60s - '70s engines and cam profiles on non-roller cams and the Feds removing or radically reducing this from all modern oil due to CAT and EPA/CAFE concerns I have wipped out more then one cam due to this problem. Even Rotilla has dropped levels of Zinc Disolphate to marginal levels at best. Add a bottle of this to your oil change and rest assured it will have enough ZDP to eliminate cam and lifter scuffing. Great product, thanks for offering it!















