engine oil additive 3 pack

Rebuilt my engine, 95 C2500 305/350 flat tappet lifters, For the 305 parts I added an extra one-eighth lift on the cam.1 year ago, And been using zddp . After 1 year the lifters still have the fine finish swirl marks on the cam face, And the edge of the lifter are still rounded. No discoloration, cone shapes, cracks. Lifters still look new.

Good price. As advertised.

Works just like it states. Just keeping my old truck from smoking to bad from the unleaded fuel

i hope the link is not removed so you can read about what another zinc adding products performance in todays oils.this product may be ok, but todays oils are different.i have a f150 ecoboost, bought this in hopes of reducing the chance of timing chain failure.they refused to take it back, said i waited to long.i am not going to use it after reading the link.oils.[...]

Added this to my 7.3 idi diesel engine with over 400 k miles. Diesel stopped smoking at idle after 15 minutes of adding product to fresh oil change the day before. Use this in my older toyota 4x4 pickup for 2+ years. No issues or concerns.

Been using this for years on my 1965 as an additive with every oil change.

added to engine break in oil, new oil short on the zinc.

Highly recommended to protect valves from premature wear due to government mandated lack of zinc additives in engine oil.. If your car has a carburetor, you need ZDDP Maxx.