Your cart is empty.
Your cart is empty.ZDDPlus is an oil supplement that contains very high concentrations of the well-known additive ZDDP (Zinc Dialkyl Dithiophosphate), which has been the primary EP (extreme pressure) ingredient in all quality motor oils for over 70 years. However, beginning in the late 1980s, the concentration has been greatly reduced as newer oil classifications have come on the market. ZDDPlus is the ONLY EP (Extreme Pressure) component which re-establishes the ZDDP levels that classic car engines were designed for, while allowing the car owner to use the base oil of their choice. ZDDPlus also alters bearing and journal surface characteristics to prevent metal to metal contact. Under extreme conditions like a high performance motor, ZDDP reduces the tendency of parts to scuff or gall under heavy loads. While some off-the-shelf additives may have some ZDDP but the amount per bottle is small. ZDDPlus is not a typical oil additive. It is compatible with all conventional and synthetic oils intended for automotive use. By adding a small 4 ounce bottle of it at every oil change, an adequate amount of Zinc and Phosphorus will continue to protect your engine.
MR. D...
Reviewed in the United States on March 26, 2025
Helps with lubricity of modern day oils. Helps prevent cam and lifter wear on my diesel engine.
Douglas Wayne Frederick
Reviewed in the United States on October 12, 2024
My dad had me order this he uses it in his classic cars he really likes it
Customer
Reviewed in the United States on February 5, 2022
Good
American Classics
Reviewed in the United States on December 8, 2022
Thank you for the great product and fast delivery!!!!
Electrician
Reviewed in the United States on October 20, 2020
Modern oil has become synthetic and has fewer additives for lubrication especially in older vehicles. This additive goes in all my engines with roller rockers. Zink is not to good for catalytic converters, primarily the reason it's no longer used. I prefer straight dinosaurs bones but this will do
Bruce lada
Reviewed in the United States on June 18, 2019
I use this in my classic cars and tractors
Big Bodie
Reviewed in the United States on April 12, 2019
This is just what my truck motor needs and Iām glad I found it here.
Eugene L. Debortole
Reviewed in the United States on April 10, 2018
Super product. A must have for new flat trapper cam installs. Remember if you lose a few lobes on your cam, it's more than a cam you have lost. The motor has to come apart, that metal has to go somewhere. IN THE MOTOR!
Recommended Products
$34.99
$ 16 .99 $16.99
$157.80
$ 63 .99 $63.99