Hamilton Cams ZDDP High-Zinc Diesel Oil Additive for Flat Tappet Cams

ZDDP-rich high-zinc, high-phosphorus oil additive for flat tappet Cummins camshafts. Raises zinc and phosphorus to roughly 1,500-1,650 ppm, the range flat tappet cams want for break-in and long-term wear protection, which today's low-zinc diesel oils don't hit on their own.

• Boosts ZDDP for cam and lifter longevity
• Built for flat tappet engines, break-in and daily use
• Extra wear protection where modern low-zinc oils fall short

Fits: Any flat tappet Cummins running a cast or steel cam. Add at every oil change and during cam break-in.

At Full Send Diesel, we don't just sell parts. We stand behind them. Hamilton Cams machines their Cummins camshafts, valvetrain, and hard parts right here in the USA, and their commitment to performance and reliability lines up with how we build trucks.

We don't just carry Hamilton as a brand. We run their parts in our personal trucks, our in-house builds, and every giveaway truck we put together. If it's not good enough for our own trucks, it's not good enough for our customers. Hamilton Cams has earned our trust, on the street and on the dyno.