TVR T350 Owner's Handbook Manual page 61

Routine Maintenance
Catalytic Exhaust Systems
In conjunction with a highly efficient engine management system designed to
work with exhaust catalysts and a fuel tank vapour recovery canister, the catalytic
exhaust system is designed to reduce emissions of exhaust gas pollutants and fuel
vapour to a level well below the strictest European and Scandinavian legal limits. To
maintain the effectiveness of the emission control system the following points should
be observed:
1) NEVER USE LEADED PETROL, even in an emergency. The emission system will only
function correctly on unleaded fuel. Using 4 star or other grades of fuel containing
lead will damage the vehicles catalytic converters and exhaust gas oxygen sensors.
Replacement of these components is expensive. The TVR recommend the following
fuel for its engine range:-
T350 Speed Six 95 (RON) octane unleaded.
Please note: For high performance driving i.e. Track days
98 (RON) octane (super green) fuel is recommended.
2) Do not allow the car to run out of fuel. An irregular fuel supply, caused by a
near empty tank, can cause engine misfires which may damage the catalytic
converters.
3) Ensure that the car is regularly serviced by a TVR Dealer or approved service
centre. All TVR Dealers have special diagnostic equipment necessary to check for
the correct operation of the emission system.
4) Avoid all situations whereby unburnt or partially burnt fuel is allowed to enter the
exhaust system. For instance, avoid unnecessarily long engine cranking periods,
never run the engine with a sparking plug cap disconnected and do not allow the
car to coast in gear with the ignition switched off.
5) It is not advisable to push or tow start the vehicle, especially if the catalysts are
hot. If the engine will not start because the battery is flat, use a pair of jump leads
and a slave battery. If the engine misfires or seems to lack normal performance it is
recommended that you drive, at low engine speeds, to the nearest TVR dealer.
6) Take care when parking the vehicle. The catalytic converters and exhaust system
can radiate a considerable amount of heat.
Please Note: The vehicle should not be parked over combustible materials, such as
dry grass, leaves or paper.
7) Sealant or other materials should not be applied to the catalysts.
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