Quicksilver High Performance Extreme Grease is a top-tier marine lubricant designed to outperform ordinary greases in both protection and longevity. Thanks to its calcium sulfonate-based formula (as opposed to standard lithium soap), this grease has inherent water-resistant properties – it will not wash out or emulsify even with direct exposure to saltwater or moisture. This makes it an excellent choice for components frequently subjected to wet conditions or submersion, such as trailer wheel bearings during boat launch/retrieval, or transom swivel joints constantly hit by spray.
Beyond water resistance, Extreme Grease is fortified with extreme pressure (EP) additives, which allow it to maintain a strong lubricating film between metal surfaces under very high loads or sudden impacts. For instance, in applications like drive shaft universal joints or wheel hubs, where pressure and heat can spike rapidly, this grease will not collapse or squeeze out. At the same time, it prevents metal-to-metal contact, reducing wear and prolonging the interval between maintenance sessions.
Quicksilver Extreme also contains robust corrosion inhibitors – once applied, the grease forms a protective barrier that keeps salt and oxygen away from metal surfaces. This means even if components remain idle for extended periods (such as a boat in off-season storage), they won’t develop rust or pitting.
Applications and recommendations:
- Steering Systems & Cables: Excellent for lubricating all moving parts of a boat’s steering mechanism – from the cable and helm shaft to linkage pivots. You’ll notice smoother steering action and reduced effort, particularly beneficial after long use or if the steering was previously stiff.
- Throttle & Shift Cables: Applying Extreme Grease to control cable ends and pivot points ensures these critical connections move freely and are protected from corrosion. This is crucial to prevent sticky or seized throttle/shift operations, especially in saltwater environments.
- Drive Shafts & Splines: When installing or servicing a propeller on an outboard or sterndrive, coat the prop shaft splines with this grease. It’s resilient enough to stay in place on the splines, preventing metal galling and making future prop removal easier, all while guarding the shaft and prop hub from corrosion at their contact point.
- U-Joints, Suspension, Wheel Bearings: The high-performance nature of Extreme Grease makes it suitable for automotive and trailer uses as well. It meets NLGI GC-LB specifications, which cover wheel bearing and chassis grease requirements. Use it for greasing suspension joints, tie-rod ends, pivot points on ATV/UTV, and especially trailer wheel bearings. It is particularly advantageous for boat trailers because it combines water resistance (wheels often get submerged) with high load tolerance for long highway drives. Your trailer’s bearings will remain lubricated and protected even under heavy loads and after dunking in the ramp.
- Application Method: The 227 g (8 oz) tube is a standard grease cartridge size – you can squeeze it out manually for quick jobs, but it’s also designed to fit small hand-held grease guns (like the Quicksilver 37299Q2 pistol-grip gun). This gives you versatility: apply directly for simple tasks or use a grease gun to inject the grease through zerk fittings precisely where it’s needed. The grease’s texture is smooth and adherent, making it easy to pack into bearings or onto gears without mess.
By choosing Extreme Grease, you’re investing in long-lasting lubrication and protection, reducing the frequency of re-greasing and potential component failures. In the long run, boat and trailer parts maintained with this high-performance grease will stay operational and are far less likely to suffer from corrosion-related issues or lubrication breakdown, even under severe conditions.




