Rislone specializes in award winning Car Engine Treatment and Fuel Additive Products for your vehicle to improve performance. Learn more about our products today.

The unique Rislone formula is designed to penetrate into valve seats, bearing surfaces, and piston rings, where sludge and varnish are likely to form. These deposits are removed with the next oil change.

Rislone High Mileage Ring Seal Smoke Repair Stops Blue Exhaust Smoke Reduces Oil Burning Seals Worn Pistons & Rings Add to Engine Oil Anytime Product Info

Introducing Rislone Cat Complete Fuel, Exhaust & Emission System Cleaner – the most advanced catalytic converter and emissions product available anywhere. This formula is engineered to help you …

No matter your situation, there is Rislone product with proven quality that can help you keep your car running at its best. Like other products, not all additives are created equal. Our first mission at …

Rislone Hy-per Fuel Complete Fuel System Cleaner is engineered to improve gas quality by increasing cleaning ability & lubrication, removing contaminants, reducing spark knock, and helping to prevent …

If you are unsure your vehicle will pass, or maybe it barely passed the last test, we recommend a fresh oil change and emissions system cleaning with Rislone Diesel DPF, Exhaust & Emissions System …

Founded in 1921 by the Shaler Company, Rislone was one of the original automotive chemical additives. Rislone was originally sold in glass bottles through service stations along with Shaler Hot …

Find current deals or submit mail-in rebates for Rislone & Hy-per Lube products. Protecting Engines since 1921.

Rislone Engine Oil Supplement with Zinc Treatment uses proven ZDDP technology along with our 90 plus years of oil additive knowledge to protect the moving parts of your engine to be used after break-in.