In Stock


Chevrolet Nova 1962-1979

In stock


Our bottles feature a child proof cap and proper warnings for its use. Zddplus has a long shelf life, as long as it’s kept sealed and stored where temperatures do not exceed 120 degrees.

The need for this product is huge, since every older performance or classic car, regardless of make or model, needs zddp in its motor oil. Zddplus is not to be used in any obd ii cars (1995 and newer) since it can prematurely erode the catalytic converters.

More information on this important subject can be researched on the internet. Simply type in “Zddp” and any car model you desire. Or search on “Flat cam.” most car models have discussion boards and forums on this problem. While many contemporary problems are discussed, many topicsare not suitable for the typical older classic cars or performance cars/trucks.

What about using diesel oils in classic cars? This is not a good alternative for several reasons. Diesel oils contain detergents required for soot and ash control and actually reduce the effectiveness of the added levels of zddp. Diesels also have higher bearing clearances, which require higher viscosity oils. As new diesel oil categories get introduced, the amount of zddp concentration in the oil will diminish.

The perfect solution to the lack of zddp in the current sm rated oils is the new product, zddplus. Our handy 4-ounce bottle has the proper concentration of zddp to bring any sm oil category back to sf specifications.

We have conducted analytical tests on almost every well-known current additive and cam break-in lube and none match, or even come close, to the zddp content in zddplus. Test reports are available for review.

The manufacturer of zddplus is an avid car enthusiast and discovered the urgent need for this product to save old car engines a few years ago. We realized that oil companies have been forced to remove zddp levels because today’s car manufacturers now have to warranty catalytic converters for over 100,000 miles. Zddp actually shortens the life span of the catalytic converter, raising warranty issues. Also, since cars now have roller lifters, it eliminates the need for zddp. The vehicles that fall through the cracks are the older performance and classic carsand trucks. The zddplus bottle label clearly states, intended for use on pre-obd…Vehicles only.

  • One bottle

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