FUEL FRESHNESS AND
Engine performance is directly related to
the quality and freshness of the petrol
consumed. Therefore, it is important to be
sure the fuel within the engines you are
servicing is usable for your testing
procedures. You may save valuable
troubleshooting time by replacing fuel if its
quality or age is in doubt.
Detonation (or pinging) on acceleration is
an indication that the fuel is either not of
good quality or is too low in octane rating
for your application.
Fuel should be no more than six to eight
• Unleaded petrol has a shelf life of about 3