High-revving, pushed-to-the-limit engines demand a special oil that they can rely on in the most extreme moments. Quicksilver 25W-50 High Performance is designed with exactly this in mind – to meet the needs of racing and high-speed engines, including Mercury’s legendary Verado series. This oil maintains a stable lubricating film even at the scorching temperatures reached in supercharged motors and provides continuous wear protection. With Quicksilver 25W-50, your engine stays protected and efficient no matter how hard you run it.
- Verado Recommended: This is the official oil Mercury recommends for all Verado outboards (inline-6 and V-8 models from 200 to 400 HP). It’s specially formulated to meet the demands of these supercharged engines, ensuring the supercharger system performs optimally and the engine delivers maximum power at all RPM ranges.
- Racing DNA: Tested in competitive and high-RPM scenarios, this oil provides consistent oil pressure and protects bearings and cylinders even during sustained wide-open throttle runs. It’s excellent for powerboats engaged in racing or equipped with high-performance engines that operate on the edge of their capabilities.
- Power Preservation: By reducing deposits and guarding against carbon build-up, Quicksilver 25W-50 keeps the engine clean and close to its peak output even after many hours of hard operation. This means less power drop-off over time and longer intervals between maintenance due to the engine staying cleaner internally.
- Universal Performance: Although created with Mercury in mind, this oil is an outstanding choice for other high-performance engines as well – for example, racing inboards, high-speed cruisers with big V-engines, or tuned engines where 25W-50 is required. Its API SL/FC-W credentials make it applicable to a wide range of modern 4-stroke engines.
- Maximum Protection: Elevated levels of anti-wear additives (like zinc compounds) and oxidation stabilizers ensure long-lasting protection of critical components. Even at extreme RPM, the oil maintains its film strength, safeguarding camshafts, cylinder walls, and gear trains from metal-to-metal contact. This greatly reduces the risk of engine damage under aggressive operation.



