
Originally Posted by
Group B Motors
depends on how old your car is. With older cars the valves need good lubrication this is why you will need xcs. engines that have been designed for unleaded fuel have valves that do not need the lubrication properties of lead. As a general rule the older engines are non-multivalve and must use xcs and the newer engines, multivalve, will be better off with unleaded.
my car is an old 97 nissan ex saloon, twin cam engine 16 valve 1,392cc displacement
unsay mas nindot i-gas ana unleaded or xcs?