2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 36Get this manual
Maintenance StorageExterior CareContinued Engine Fogging Procedure
CAUTION: Failure to perform the following preventive maintenance can result in serious engine corrosion during off season storageIn order to prevent rust and corrosion on internal engine parts (i.ecrankshaft, bearings, pistons, rings cylinder walls), Polaris highly recommends the regular use of Polaris fogging oilThe engine should be fogged daily when operated in salt water