Slick 50 Recharged High Mileage Engine Treatment — 15 oz ZDDP anti-wear formula for seal refresh and friction reduction

Slick 50 Recharged High Mileage Engine Treatment is a 15-ounce, ZDDP-enriched engine additive formulated on a multi-grade motor oil base to help reduce friction, clean deposits, and refresh seals in higher-mileage engines.

Designed for vehicles that have accumulated significant miles, this treatment blends protective anti-wear chemistry with detergents and seal conditioners. It’s supplied in a 10W-30 carrier but is engineered to be compatible with conventional, semi-synthetic, and full synthetic oils as well as single-grade and multi-grade lubricants. The formula replaces lost additive content without diluting the existing additives in your engine oil, making it suitable for use during oil changes or between services.

How does this product protect worn engine parts?

The proprietary ZDDP (zinc dialkyldithiophosphate) content lays down an anti-wear film on metal surfaces to reduce friction and metal-to-metal contact under load. This protective boundary layer helps limit heat generation and gradual wear that can rob power in older engines.

• Anti-wear ZDDP chemistry forms a protective film on bearings and cams
• Friction-reducing base oil lowers operating temperatures
• Helps maintain mechanical tolerances in aging components

Can it stop or reduce oil leaks and seal-related issues?

Slick 50 Recharged contains seal revitalizers designed to condition rubber and elastomer seals, helping to swell and restore flexibility. Improved seal condition can reduce seepage and slow the progression of small leaks, especially in older engines with hardened seals.

• Seal conditioners help soften and restore pliability to aging seals
• May reduce minor oil seepage when used as directed
• Works alongside regular oil change maintenance for best results

Will this additive work with my engine oil type?

Although dispensed in a 10W-30 carrier, the treatment is formulated to be compatible with all major oil types and viscosities. It will mix with conventional, semi-synthetic, and full synthetic oils and can be used with both multi-grade and mono-grade oils without adverse interaction.

• Compatible with conventional, semi-synthetic, and full synthetic oils
• Safe to add to multi-grade and single-grade lubricants
• Designed not to dilute the performance additives already present in your oil

How and when should I use this treatment for best effect?

Use during an oil change or between scheduled oil services according to the product instructions. A single 15-ounce bottle treats a standard oil fill to supplement additive content, support engines showing wear, and help manage oil consumption tendencies.

• Add at oil change or pour into crankcase while at operating temperature if instructed
• One bottle is sized for typical passenger-car oil capacities
• Regular use can help preserve engine performance as mileage increases

Who is this for: Slick 50 Recharged High Mileage Engine Treatment is intended for vehicle owners and mechanics caring for cars, trucks, and SUVs with higher mileage that are experiencing reduced performance, slight oil consumption, or minor leaks. It’s appropriate for drivers who want an additive that complements modern motor oils—conventional or synthetic—without interfering with their existing additive packages. Owners looking for a maintenance-oriented product to help maintain mechanical health between services will find this treatment especially useful. Always follow the vehicle manufacturer’s service guidelines and product directions when adding any engine treatment.