Five answers that are different from Volvo's recommendations.
People wonder why their engine has problems?
kdiddle doesn't say what engine they have but this is Volvo's latest from the owners manual.
Fuel Storage Mixture
This procedure requires a moderate level of
mechanical skill and knowledge. If you do not feel
comfortable performing this procedure, see your Volvo
Penta dealer for assistance. Ask the dealer to perform
this Fuel Storage Mixture procedure as part of
preparing the engine for storage.
Using a portable, outboard engine fuel tank, add:
• Fresh fuel (enough to run engine 15 minutes)
• Two-cycle motor oil (50:1 ratio, gas to oil)
• Volvo Penta Ethanol Fuel Treatment, per label
instructions
DANGER!
Fuel and vapors will be present during procedure,
which can result in an explosion; provide ventilation
and eliminate all sources of spark or flame.
WARNING!
Engine must be run to complete process. Take
precautions to ensure safety and prevent engine
damage:
• Boat must be properly supported.
• Run the engine using the engine flush fitting. The
engine must have adequate cooling water; always
monitor engine temperature gauge and alarms
when running engine with boat out of water.
1. Not available in all markets. Use a comparable marine fuel
stabilizer if the Ethanol Fuel Treatment is not available.
• Run engine with drive out of gear and in full trim
down position.
• Do not run fuel pumps dry.
1 Disconnect the fuel line at the inlet fitting of the
engine's fuel pump. Connect a line from the
portable tank (with storage mixture) to the fuel
pump inlet.
2 Run the engine on the storage mixture for five
minutes at 1500 RPM. This will ensure that all fuel
system and internal engine components are
protected.
3 Reduce the engine speed to idle and stop the
engine.
4 Reconnect the boat fuel line to the fuel inlet fitting
and check for fuel leaks. Do not start engine.
DANGER!
Failure to inspect your work may allow fuel leakage to
go undetected. This could become a fire or explosion
hazard.