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OPERATING INSTRUCTIONS
FUEL
Petrol engines
Vehicles without catalyst
44 and 57 kW carburetor engines
_saded regular fuel to DIN 51600,
RON
1
1 not lower than 91
or
ead-free regular fuel to DIN 51607,
RON
not lower than 91.
if regular fuel with adequate anti-knock
properties is not available, use premuim
or a suitable mixture.
66 and 82 fuel injection engines
Leaded premium petrol to DIN 51600,
RON" not lower than 98.
Vehicles with catalyst
61 and 70 kW fuel injection engines
Lead-free regular petrol to DIN 51607,
RON
1
not lower than 91.
If lead-free regular petrol with adequate
anti-knock properties is not available,
use lead-free premium petrol or a suit-
able mixture.
For all vehicles with catalyst:
Only lead-free petrol may be used in
these vehicles.
The use of leaded petrol does not lead,
to engine damage but it is very detrimen-
tal to the functioning of the emission con-
trol system because the lead is deposit-
ed in the catalyst.
Even one tankful of leaded petrol will
detract from the efficiency of the cata-
lyst. Although lead-free fuel may again
be used afterwards the original efficien-
cy of the catalyst is never fully attained.
On vehicles with Lambda probe the
mixture formation is also negatively
affected. This can cause poor engine
performance (jerking and stalling when
idling) combined with a higher fuel con-
sumption.
" Research Octane Number, indicates anti-
knock properties of the petrol.
63
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