Owner`s manual

STORAGE & WINTERIZATION

Proper storage and/or winterization preparations are as impor-

tant as how a drive train is maintained in use. Since special preparations are necessary, the

boat owner should have the work done by an ILMOR-authorized dealer. Damage that oc-

curs from improper storage and/or winterization is not covered under warranty and must

be avoided.

 Enginewinterizationrequiresaddingafuelstabilizerandbiocidetothefueltank/

system, changing the engine oil/filter, draining all raw water from the cooling system, and

adding marine/RV anti-freeze to all raw water engine components.

Damage due to improper storage and/or winterization preparations is not cov-

ered under warranty. Owners are encouraged to seek assistance from an authorized

ILMOR dealer to properly prepare the drive train for periods of inactivity exceeding

two (2) weeks.

This preparation needs to be done prior to removing water from the engine, if that will be part of

the process.

Boats that are going to be stored for extended

periods (more than two [2] weeks) or winterized should have atten-

tionforthefuelsystem.EvenTOPTIERgasolineswillexperience

some separation of elements and settling during these periods. Of

considerable concern is that water condensation will occur within

the fuel system, and water is an enemy of good-starting and running

engine fuel systems. Therefore, follow this procedure:

•Thefueltankshouldbeninety-to-ninety-fivepercent(90-95%)

fullofTOPTIERgasoline.Thisallowsforminimalroominwhich

air can oxygenate the fuel during diurnal cycles (daily periods of

expansion/contraction of gasoline vapors and air as a result of tem-

perature changes). As temperatures rise in the tank, the pressure

also rise, pushing out gasoline vapor-and-air mixtures.When the

temperature falls, pressure lowers and the system will seek to draw fresh air and water vapor

(dependingonthehumiditylevel)intothetank.Freshairisreplacedwith“lightends,”which

are low-boiling components that vaporize at ambient temperatures. Light ends are required

during cold starts to vaporize the fuel. Since the daily diurnal cycles eliminate the light ends,

a nearly full tank helps to minimize the air volume entering the system.

• AddabiocideadditivesuchasValvetectBioguard

FuelBiocideinthefueltanktolimitmi-

crobial growth in gasoline. Follow the directions provided by the stabilizer’s manufacturer.

• Addafuelstabilizer,suchasSta-Bil

, to the fuel tank. Follow the directions provided

by the stabilizer’s manufacturer.

Fuel System

Treatment

ILMOR MV8 Owner’s Manual • Page 37