ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 6 Bottle Pkg

Very good product and fast shipping

makes oil in my old car work better

Like this product

We’ve used this for years in our classic cars

Thanks for providing this product to market. I'm not going to mix racing oil with every oil change anymore. It's easier to just throw in a bottle of this and save about five bucks per oil change. Not for cars with catalytic converters, but if you've got a classic car this is a good idea, and critical for breaking in newly-rebuilt older engines.

This stuff is makes oils pass the “bearing test” if you have ever seen that test. This stuff is a SOLID MUST for any four stroke air cooled engine! Mowers, pressure washers, weed eaters, pumps, any small (or large) air cooled engine!You won’t believe the increase in power and the drop in engine heat.

This is a no brainer for my pair of FJ60 Toyota Land Cruisers. These older, non roller cam engines need the additives that have been bread out of modern motor oil used in OBDII and newer engines. If your engine was designed prior to 1996, your cam and flat lifters require ZDDP in your motor oil to avoid premature deterioration. This stuff is great.

Not intended for newer engines nor for use with synthetic oil based on our research after purchase. (Should have done this before!) This was not mentioned in the description.