Rislone Ring Seal Smoke Repair Additive, 16 oz — 5-Pack, Reduces Blue Smoke & Restores Seals

Rislone Ring Seal Smoke Repair is a 16-ounce, high-mileage engine additive designed to reduce blue exhaust smoke, curb oil burning, and help restore sealing between worn pistons and rings.

If your engine is producing blue smoke, burning oil, or fouling spark plugs, this concentrated formula helps restore sealing and thicken the oil film to limit blow-by. Rislone developed this product specifically for older, higher-mileage gasoline and diesel engines. Each 16 oz bottle treats 4–6 quarts of oil, and this listing includes a convenient five-pack so you can service multiple vehicles or keep spare bottles on hand for future top-offs.

How does Ring Seal stop blue exhaust smoke?

The additive contains viscosity modifiers and high-shear polymers that thicken the oil film and help fill microscopic gaps between pistons and cylinder walls. This improved film and sealing action reduces the amount of oil that reaches the combustion chamber, which in turn cuts down on blue smoke from the tailpipe.

• Viscosity improvers increase oil film thickness around worn components.
• High-shear polymers help form a temporary, flexible seal on piston rings.
• Reduces oil migration to the combustion chamber and lowers visible smoke.

Will it work in my engine and in different weather?

Yes — Rislone Ring Seal is formulated to be compatible with gasoline and diesel engines using conventional or synthetic oils. The all-weather formulation maintains proper flow characteristics in both hot and cold conditions so the product can function reliably year-round.

• Safe for conventional, synthetic, and high-mileage engine oils.
• Designed for 4-, 6-, and 8-cylinder engines; one bottle treats 4–6 quarts.
• Maintains oil flow and effectiveness across temperature extremes.

How quickly will I notice results and how is it applied?

Many users notice a reduction in visible blue smoke and plugged spark plug symptoms after a few hundred miles of normal driving, though results vary by engine condition. Application is simple — pour the bottle into the crankcase during an oil change or top off when oil is low, and drive normally to allow the formula to circulate and condition worn parts.

• Add directly to the engine oil; no special tools needed.
• Can be used anytime: at oil change or as a top-off treatment.
• Expect gradual improvement as the formula mixes with existing oil and coats components.

Does it protect or reduce engine wear?

Rislone Ring Seal includes cushioning additives that help reduce friction and wear by coating internal engine parts. While it’s not a substitute for mechanical repairs, the product can help quiet noisy engines and slow further degradation when used as part of routine maintenance.

• Coats and cushions piston and ring surfaces to reduce metal-to-metal contact.
• Helps quiet ticking or noisy high-mileage engines.
• Can extend useful service life when combined with proper maintenance.

Who is this for? Rislone Ring Seal Smoke Repair 16 oz (5-pack) is aimed at owners of older or high-mileage gasoline and diesel vehicles experiencing blue smoke, oil burning, or fouled plugs who want a quick, easy chemical option to improve sealing and reduce blow-by. It's also useful for mechanics, fleet operators, and hobbyists who need multiple doses for several vehicles or prefer to keep spare bottles for preventative top-offs.