Other Product Information; Fuel Requirements - Volvo Penta 3.0GS/SX Owner's Manual

Other Product Information

Fuel requirements

WARNING! Fuel is extremely flammable and highly explosive under certain conditions. Al-
ways stop the engine and do not smoke or allow open flames or sparks near the boat when re-
fuelling.
When filling the fuel tanks, ground the tanks to the source of fuel by holding the hose nozzle
firmly against the side of the deck filler plate or ground it in some other manner. This action
prevents static electricity build-up which could cause sparks and ignite fuel vapours.
Fuel leakage can contribute to a fire and/or explosion.
Fuel
Use petrol with an octane number of at least 93
(RON).
Fuel injected engines can be run on petrol down to 90
octane (RON) if 93 octane fuel is not available but
some power will be lost. Return to 93 octane as soon
as possible. Carburetter models must always use 93
octane (RON). The engines are designed for unlead-
ed petrol and for environmental reasons should al-
ways be run on this type of fuel. Leaded fuel can be
used if unleaded fuel is not available.
NOTE! In certain areas, Lake Constance for ex-
ample, the use of leaded fuel is not permitted.
IMPORTANT! Never use lead additives as
these may leave deposits on injectors and car-
buretor jets.
Alcohol in the petrol (especially methanol), causes
rubber and plastic components to age more quickly.
This can result in fuel leakage. Fuels containing me-
thanol should therefore not be used to avoid da-
38
mage to fuel system components. This type of da-
mage is not covered by the factory warranty.
The ethanol content of fuels used must not exceed
10% and the petrol must maintain the correct octane
number.
When running the engine on fuels containing alcohol,
a leaner fuel air mixture is required. This may cause
idling problems, starting difficulties and vapor locks.
Petrol mixed with alcohol as opposed to pure petrol
binds water. This can result in the increased corrosi-
on of metal components in the fuel system. Check of-
ten and regularly.
For safety reasons all rubber or plastic components in
the fuel system should be checked often and regular-
ly. This includes components such as fuel lines, seals
and fuel tanks. Always replace components you sus-
pect are aged or damaged.