The Unique Requirements of Marine Engine Operating Conditions

What’s the unique problem of the marine engine? Water. Water promotes rust, corrosion and rapid wear. Freshwater-cooled boats operate cool, which promotes in-engine condensation and rust. Closed-system marine engines tend to operate very

hot, which promotes the creation of acids — and engine corrosion. The longer the engine works, the more water and acid build, and the acid and water continue to work after engine shutdown.

AMSOIL synthetic engine oils shield engine parts from rust and continuously neutralize engine oil acids. They are ideal for use during operations and lay-up.

Additionally, AMSOIL synthetic motor oils are formulated for extended drain intervals. In fact, many AMSOIL product users base their oil changes on the findings of used oil analysis instead of hours, a critical benefit in operations where time is money and

oil changes are difficult. AMSOIL synthetic motor oils are extended drain capable because they are synthetic oils. Synthetics are much more resistant to heat, oxidation and mechanical breakdown than are conventional oils, which helps synthetic last longer than conventional oils last.

AMSOIL synthetic motor oils are formulated with long-lasting, top-quality additives to take advantage of the durability of synthetic basestocks, and make extended drain capable oils. Finally, synthetic oils offer superior lubrication and protection to that offered by conventional oils, due to the ability of synthetics to maintain low temperature fluidity for rapid post-startup lubrication and protection and their ability to maintain a durable film of protection in high temperature operations.

Conventional oil filters cannot remove water from the oil circulation. They also do not consistently capture particles smaller than 15 microns. Research shows particles in the 5 to 20 micron size range cause up to 60 percent of engine wear. The AMSOIL By-Pass Oil Filter, used in conjunction with full flow oil filtration, removes water. It also removes virtually all particles down to three microns in size, and even removes particles smaller than three microns with greater than 50 percent efficiency. Ultra-filtered oil — like that delivered by the By-Pass Oil Filter — lasts longer and performs better than conventionally filtered oil, and that increases engine life and performance.

The AMSOIL Super Duty Full Flow Oil Filter offers superior filter life and filtration to that offered by conventional full flow oil filters. Its blend of cellulose, fiberglass and synthetic media and tight pleating optimize small particle capture, total particle capture, media durability and media capacity. In fact, performance tests demonstrate the AMSOIL Super Duty Filter provides over 75 percent better combined

efficiency/capacity than other leading filters, and that increases filter life. The AMSOIL Super Duty Filter also features an oil pressure relief valve when required, to ensure continuous oil flow; a heavy-duty drawn case with a drawn steel double-crimp base and rolled under seaming for filter body strength; and an anti-drain back valve when required to keep dirty oil in the filter when the engine is not running.

AMSOIL Propylene Glycol Antifreeze and Coolant offers significantly lower toxicity than conventional ethylene glycol products do, important benefits for closed system engines operating in the sensitive marine environment.

AMSOIL Synthetic 80W-90 GL-4 Gear Lube provides outstanding rust and corrosion protection for gear face protection and outstanding demulsibility for rapid water separation. AMSOIL Gear Lube offers dependable lubrication and protection in extreme operating temperatures, maintaining fluidity in low temperatures and a durable film of protection in high temperatures. AMSOIL Gear Lube offers thermal stability and durability, which protect gears from deposits and wear during and after

sustained high temperature operations.