4405 Hy-per Lube Zinc ZDDP Supplement, 11 oz. | Real ZDDP Zinc Additive

Good quality product, easy to add to cars oil

I've been using zinc supplements for rebuilds for a while now, but a friend recommended trying Rislone in my RZR. I must say, I have no complaints. Rislone has a longstanding reputation in the industry, so I decided to give it a shot. While I can't be certain of its impact, the price point makes it a worthwhile addition for potential benefits. Highly recommend!

Works great the old tractor wouldn't be without it!

Extra zinc in your engine oil sounds like a good idea for air cooled motors Put a splash of this in my push and ride on mower,

Good quality material.

I use this as directed for my 1999 Jeep 4.0L. Lots of critics on if its really needed, but as far as I am concerned, its better than finding out later Zinc was needed. Priced okay, hoping it works, I use it with semi-synthetic Pennzoil. I have 179,000 miles and still rolling.

Great price on additive

The reason to add this to an oil change regimen is when you have a motor that has a flat tappet camshaft. Including this zinc additive to each oil change will protect your camshaft and lifters from premature failure due to changes in oil regulations that are present today. If you have such a motor I recommend this product as it will help you preserve the performance of your engine. It will help keep it running smoother with less engine noise and a lower temperature. Possibly resulting in better mileage and less leaks down the road.