Renault Premium DXi 11, Service Manual

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C1-2
Driving
Use during the summer or in hot climates
Check the battery electrolyte level frequently. Do not labour the engine, change gear as often
as necessary to maintain optimum engine speed. Thus, the circulation of water in the cooling
system will be improved, keeping the engine temperature within the required specification
limits. Frequently clean the exterior of the radiator by blowing compressed air through the
core from the engine side, to remove any insects or dust that may restrict the air flow. Ensure
that the radiator is in good condition and, if necessary, descale.
Use in dusty atmospheres
It is recommended to carefully inspect the air filter clogging indicator every day.
Air filter
Normal servicing (see page E6-6)
Do not forget that filter fouling depends on engine revs. If low gear ratios are constantly
used (mountainous terrain), then the filter should be serviced on a time basis rather than
mileage.
A blocked filter can cause serious damage.
Use at high altitude
The use the vehicle at high altitudes affects engine performance. The reduction in power is
in the region of 10% for naturally aspirated engines and around 5% for turbocharged engines
for every 1,000 metres increase in altitude. In another connection, bear in mind that the boil-
ing point of water decreases by 3.5°C every 1,000 metres increase in altitude.