ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

ABC Direct Auto Part ZDDPlus is an engine oil additive that claims to provide a high level of protection for older engines like those found in classic cars. The product is designed to replace zinc additives, which are no longer present in modern engine oils, to prevent wear on internal parts of older vehicles. Based on customer feedback, this product appears to work well for its intended purpose. Many customers have been using ZDDPlus for decades and have noticed great protection for their older engines, with no issues with excessive wear of internal components. A few customers have used this product with marine, motorcycle and tractor engines and reportedly gotten equal protection. The product has a typical dosing that is one 4 ounce bottle per 5 quarts of oil. However, some customers have claimed that the product has a diluted waste of money for the amount of oil covered in a bottle. While some customers have expressed caution, pointing out that the product may foul catalytic converters in cars with catalytic converters, the vast majority of customers who have classic cars and older engines have reported no issues with any downside to this product. Overall, the ABC Direct Auto Part ZDDPlus seems to be an effective engine oil additive for older engines, and with a good price, it could be a suitable choice for all who need it.