Chop & Change Fuel Grade

[98cliosport]

Hey,
I know I only have a lil Clio but I tried Optimax in my car the other day and noticed a significant decrease in fuel consumption. I now get about an extra 50 miles per tank. Avg 35mpg.
My question is, is it bad for the engine to keep changing the grade (RON) of fuel you use?

Thanks,
Mark.

 

[mr bognor]

No dont think so your ECU will take the fuel grade in to account .

 

[Liam]

decrease or increase? you should get more with optimax if anything.

 

[Guy]

er he said consumption decrease..

i.e. increase in efficiency (mpg)

 

[98cliosport]

Yeh. an increase in efficiency.

Im just sad cos im only 18 and have a long wait till i get a new car. Probably looking at gettin a 172 to start with. Fingers crossed

 

[Liam]

yeah, that'l teach me to read posts properly then i always used optimax in my other car for that very reason. Think it worked about the same, the extra MPG more or less cancelled out the extra cost so you might as well.

Liam