Petrol Additives - Volkswagen 1993 Golf Instruction Manual

GE NERAL MAINTENANCE
Vehicles without catalytic
converter
44 and 55 kW engines
u
n leaded or leaded regular petrol
RON ' ) not lower t han 91
66 kW engine
Unleaded or leaded premium petrol
RON ') not lower than 95
85 kW engine
Premium petrol un leaded or leaded
RON ') 95
or regular petrol unleaded or leaded .
RON 1) 91.
The use of un leaded regular petrol, w ith a
m inimum of 91 RON 1) leads to a slight loss
of power.
Research Octane N umber, indicates anti­
knock pro perties of the petrol.
Notes
• Unleaded petrol must comply with DIN21
51 607 and leaded petrol with DIN 51 600.
• If in an emergency the octane rating of
the available petrol is lower than that re­
quired by the engine only drive w ith me­
dium engine speeds and low eng ine load­
ing. High engine loading with full
throttle or high revs can cause en­
gine da m ag e . Fill tank with petrol of the
correct rating as soon as possible
&..,
On vehicles with ca talytic con­
~
verter only unleaded p etrol may
be used.
Even
a single tank of leaded petrol
will reduce the effectiveness
of the
catalytic converter.
In the interests of the
environment,
unlead ed petrol should always
be
preferred to leaded fuel. even on ve­
hicles without
a
catalytic converter.
21
Standards issued by the G rman Standards
inslltu\lon
Petrol additives
The quality of the fue l has a decisive influ­
ence upon the running behaviour, perform ­
ance and service life of the engin e. The addi­
ti ves which are mixed into the petrol are of
particular sign ificance. One is advised
therefore only to use good qual ity pet­
rol containing additives.
If such fu el is not available, or if eng ine
troubles such as starting difficulties, stall ing
during idling, vibration and loss of power
occur, the appropriate additives should be
mixed with the petrol w hen fillin g the tank.
These additives have an anti-corrosion ef­
fect, clean the fuel system and prevent de­
posits building up in the engine.
Petrol additives available in accessory
outlets have not all shown themsel ves to be
effecti ve . Therefore additives which have
been tested for Volkswagen engines are
available from Volkswagen dealers in Ge r ­
many and in many export countries . The
Volkswagen dealers are al so informed w ith
regard to the use of additives, and they
know what to do in cases where deposits
have already built up.
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