Quote:
Originally Posted by graeme0309
Yeah, I had just come down from the hills.
What does the altitude do to driving conditions?
And why would petrol stations have different types of additives?
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Each petrol distributer (BP, Shell, Esso, Texaco) have different fomulas that they add to thier petrol and claim it to be cleaner, greener and give more MPG..
As for altitude the engine needs air to mix with the petrol in a specified ratio.. Higher altitude means less air than a lower altitude, if you take your bike up on some continental plateaus they suggest that you alter the carb needles to bring the ratio more inline with the rarified air. Even just a few hundred feet can seriously mean the difference between your bike running too rich, too lean or just right
