MasterCraft prostar 190 2011, Руководство пользователя

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ILMORMARINE Engines
What Type of Gasoline To Use
The ILMOR MV8 engine (5.7, 6.0 and 6.2L) requires a minimum of 87 octane fuel. The octane number is
based on the pump octane number, which is (R + M)/2, where R is the research octane number and M is the
motored octane number.
For better performance, 93 octane fuel is recommended.
Fuels other than specified will negatively alter performance, emissions and could damage the engine.
Use of lower octane fuels will cause spark knock (pinging). Continued heavy spark knock can cause severe
engine damage. The engines have knock detection systems that offer the best engine performance by con-
trolling knock through precise ignition timing. The higher octane fuel will cause less knock for the ignition
system to process and adjust for.
Poor quality or old fuels can cause problems such as loss of performance, rough idling, hard starting and
hesitation. If the engine experiences any of these symptoms, first try another brand of gasoline and/or replace the
old gasoline with fresh gasoline.
Many engine manufacturers believe the U.S. Environmental Protection Agency’s (EPA’s) detergent levels
in gasolines do not provide sufficient deposit controls to allow for optimal engine performance. As a result,
TOP TIER Detergent Gasoline standards were created to ensure gasolines have all the necessary additives
and detergents to reduce the build-up of deposits in an engine. ILMOR recommends purchasing fuel from a
supplier that confirms their fuel meets TOP TIER specifications. For a list of TOP TIER retailers, check www.
toptiergas.com, and click on “Retailers.”
Damage to the engine by use of low-quality gasoline or gasoline with an octane rating below the minimum
level listed for ILMOR MV8 engines will void the warranty on the engine.
Using Oxygenated Fuels or Fuels with Alcohol
E-85 fuels
are not to be used! Use of this fuel may cause engine performance to suffer and may damage
vital fuel system components.
Fuel that is no more than 15 percent MTBE (methyl tertiary butyl ether) may be used in the MV8 en-
gine. MTBE is an oxygenate and octane booster. MTBE is used in fuels to meet government mandates. How-
ever, because of environmental concerns MTBE is being phased out and replaced with ethanol or methanol.
Leaded fuels may NOT be used in the MV8 engine.
Gasoline containing levels higher than 10 percent ethanol or methanol is NOT TO BE USED in the MV8
engine. This is primarily due to the fact that the alcohol in the fuel absorbs water. Water in the fuel can cause
corrosion and extensive damage in the fuel system. If the presence of alcohol in the gasoline is unknown,
frequent inspections of the fuel system are required.
When the Boat Is Not Used for a While
ILMOR recommends
the use of Sta-Bil ® fuel stabilizer if the boat consumes less than a tank of fuel every
couple of weeks. Today’s fuels are more susceptible to degradation, and the use of a quality stabilizer helps
ensure fewer problems if the boat is used only on a limited basis.
If the boat has not been run for more than thirty (30) days and fuel remains in the tank—even stabilized
fuel—the engine may run with reduced performance until the existing fuel has been used. The manufacturer
will not pay for repairs to components that are damaged from poor quality fuel as this is not covered under
the engine warranty.
2011 Owners Manual...Using Care When Fueling...Page 7-3
Extended storage with fuel in the system
can affect fuel stability and may require
system inspection and fuel filter replace-
ment when the boat returns to service.
Fuels Outside the United States and Canada
If the boat is operated
outside the United States or Canada, it may be
more difficult to obtain lead-free fuel. As the engine components are manufac-
tured to function properly only with unleaded gasoline, it may be necessary to
search for refined unleaded gasoline.