What is zddp

Valve spring pressures were checked, lifters were matched to the cam, everything was put together correctly, and brand-name oil was used - but there was still a failure. Significantly reduced levels of ZDDP in mainstream oil were to blame.

Looking back, we know these things changed parts-store oil forever:. Modern parts-store oil is engineered with all of these things in mind. Obviously, your Eisenhower-era cam-in-block engine has a different set of engineering challenges. It needs different oil. For certification, API oils are tested on engines with a maximum lbs. Typical performance engines are equipped with valve springs over lbs. If you have an engine with a flat tappet cam, you need to be sure that the oil you use has enough ZDDP in it to create that layer of protection between the cam and lifters.

Just like all the parts in your engine, motor-oil is designed for a specific usage and operating range. ZDDP additive packages will vary between applications, so be sure to match your oil to your vehicle: break-in oils, classic car oils, racing oils, diesel truck oils, or modern performance oils. We know what you need, and which oils perform best. See our full line of high-zinc oils, ZDDP oil additives and break-in oils by visiting our engine oil page.

Products to Compare max of 3 X. Videos All Videos. Under a microscope, your engine components are a series of peaks and valleys, separated by a layer of motor oil. The zinc in ZDDP-enhanced oil attracts to the metal. However, older vehicles still need to use the heavy-duty, anti-wear protection of zinc to prevent more significant adverse effects.

Zinc replacement additives provide a similar level of lubrication and coating without the negative effects of ZDDP. Zinc can harm the catalyst when it gets on it, resulting in the catalytic converter having a shorter service life and increased emissions.

They need zinc for the anti-wear protection they provide, but they also need to follow regulations and protect their catalytic converter. While the new regulations are great for reducing environmental impact and keeping engine components safe, any non-roller cam-designed or high-performance engine is left without the wear protection it needs. For example, Hy-per Lube Zinc Replacement Additive provides users with the extreme pressure wear protection of a zinc product, without the zinc.

While using the product, you can be certain that any rocker arms, lifters or cams you apply the product to will be kept safe without any significant wear problems. Using a zinc replacement additive for old cars comes with several advantages that make it a superior motor oil to anything else on the market for older vehicles. With its ability to provide anti-wear protection for engines even in high-stress environments while doing away with the negative effects of zinc, zinc replacement additives for older cars are a must-have for any responsible classic car owner.

Hy-per Lube Zinc Replacement Additives use a unique Polymer Ester formula that keeps your oil film strong even at high temperatures. Some experts suggest using a higher level of zinc additives during the break-in period for your engine, as the engine is the most susceptible to uneven wear and the damage that comes with it during that time.

Instead of using an oil with a high level of zinc, you can go with a zinc replacement product that offers the same kind of heavy-duty protection. After the break-in period, you should still use a zinc replacement additive to reduce wear on the car over time. A zinc replacement additive will keep the car running smoothly, reducing the level of friction and heat generated in the engine. A flat tappet cam will need zinc additives while a roller cam will not. This differentiation between the two comes down to the way both cams are designed.

While the engine is on, the cam lobe constantly slides on top of the tappet, generating a great deal of friction and raising the temperature. Without proper lubrication, this friction can end up causing a considerable amount of damage to the vehicle. This damage to the valve operation can have several negative effects on the engine. You always need zinc oil additives for flat tappet cams if you want your engine to last as long as possible. For example, the Hy-per Lube Zinc Replacement Additives provides an excellent alternative to high zinc motor oils.

Instead of worrying about zinc damaging your engine over time, you can use a zinc replacement additive that offers greater protection without the negative effects of zinc build-up. Contact us if you have any questions about the products, as our knowledgeable and friendly staff will be happy to help.

Posted in: Engine. English — Download PDF. Box Holly, MI Canadian Visitors Enter Here. Why Camshafts Need Zinc Motor Oil The camshaft is often the main reason your engine needs either zinc or a zinc replacement additive in the motor oil you feed to it.

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