Sounds like an advert

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PWC engines are made of aluminum where the water passes so it doesn't rust, it's called corrosion. 8 grand isn't very high compared to a motorcycle. PWCs don't have gear boxes and multi plate wet clutches to deal with. PWCs don't have to deal with dirty dusty salty wet road conditions or cold winter starts. Seadoo and Kawasaki designed and built the machine so they know the metals, design and quality are required for decent lubrication protection and make recommendations based upon those facts. Oil salesmen however do not.
Most of the rust on a PWC marine engine happens externally and only TLC will control that aspect. Cars drive in the rain and run through dirty gravel soaked puddles. The water temperature coming out the back side of your jet ski is much cooler than the stuff in the automotive cooling system, this is because of the unlimited supply of cold water. Lower water temperatures, water cooled exhaust, and an oil cooler really give the PWC engine oil system the edge over a typical 4 cylinder automobile. The engine does not see the shock loads or torque spikes that a solid connection to the road will when the clutch is popped or the wheels spin and grab or when you gear down. I run automotive oil and after 20 hours it still looks like the day it came out of the jug. There is no metal in the oil or the fliter during oil changes, if the wear were 'uncontrolled' surely this would not be the case..
Look at a 5 year old car and then look at a typical 5 year old PWC for condition, look at the rust, think about the hours operation and projected lifespan. PWC users take care f their toys now the reliable vehicle towing it likely is treated like crap.
If you dump your PWC upside down and swallow salt water no oil brand is going to help it.....wait a second it's marine oil. If wear were uncontrolled my engine would be toast by now, what a crock they sold on that copy and paste! Remember gentlemen the world runs on over 50% BS
[quote]Marine engines operate under high loads and RPMs for extended periods of time, causing traditional automotive oils to break down and lose viscosity.
Marine engines are prone to rust, leading to uncontrolled wear and premature engine failure. {/quote]
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