Rislone Hy-per Lube Zinc ZDDP Oil Additive 6-Pack (6 x 11 oz) — Boosts EP Protection & Start-up Wear Reduction

Rislone Hy-per Lube Zinc ZDDP Supplement is a concentrated oil additive designed to boost zinc and phosphorus levels in motor oil to help protect valve trains and other critical engine parts.

Rislone's Hy-per Lube Zinc ZDDP Supplement (4405-6PK) comes as six 11 oz bottles of a petroleum-based performance booster formulated with ZDDP and mixed esters. It’s made to increase extreme-pressure (EP) protection where newer low-ZDDP oils may not provide enough film strength—especially important for older engines, flat-tappet cams, or high-load components. The formula targets friction reduction and thermal stability to help engine oil resist viscosity breakdown under stress.

How does this supplement protect internal engine components?

The additive delivers extra zinc and phosphorus (ZDDP), which form a sacrificial anti-wear film on metal surfaces when conditions reach high pressure and temperature. That film helps reduce metal-to-metal contact on parts like lifters, camshafts, and pushrod tips, particularly during heavy loading or initial start-up.

• Provides EP (extreme pressure) protection where base oil alone may be insufficient
• Helps form a protective boundary film on valve train parts
• Reduces friction spikes during high-load events

Will Hy-per Lube reduce start-up wear and piston scuffing?

The formula is designed to improve lubrication at start-up by increasing film strength and stabilizing the oil’s thermal properties. That can reduce dry-start wear and the risk of piston scuffing caused by momentary loss of oil film during cold starts or high-temperature operation.

• Improves lubrication at engine start-up to minimize initial metal contact
• Helps maintain oil viscosity under heat to protect pistons
• Clinging additives keep bearings and small surfaces coated where splashing oil may fail

How do I use the 11 oz bottle and how much to add?

Each 11 oz bottle is a concentrated treatment designed to be added to a full engine oil change according to the product instructions. Dosage depends on your engine oil capacity—follow the label guidance to reach the intended ZDDP boost safely.

• Dispose of old oil and install fresh motor oil per vehicle specs
• Add the recommended amount of Hy-per Lube to the full oil fill
• Run the engine briefly to circulate the additive evenly

Is this compatible with modern oils and safe for street use?

Hy-per Lube is formulated to supplement modern motor oils by restoring zinc and phosphorus levels, but compatibility depends on vehicle type and manufacturer recommendations. It’s commonly used in classic, modified, or high-performance engines that need additional EP protection—check your owner's manual or a mechanic if unsure.

• Designed to complement petroleum-based motor oils
• Useful for older engines or high-load applications needing extra ZDDP
• Consult OEM guidance for emissions-sensitive engines or warranty concerns

Who this is for: Rislone Hy-per Lube Zinc ZDDP Supplement is aimed at owners of classic cars, hot rods, race engines, and any vehicle with flat-tappet cams or heavy valve-train loads that may benefit from added zinc and phosphorus. It also fits enthusiasts who want to increase oil film strength during start-up and high-stress conditions, plus professional shops servicing vintage or modified engines. If you use modern low-ZDDP oils but need extra EP protection, this six-pack of 11 oz bottles provides multiple treatments for regular maintenance or repeated use.