Shell VPower 97 or VPower (100) Racing

[en035]

In Turkey, we have these two available, but price difference is huge. For a Mk1 RS 172 is concerned, Does it really make a huge performance or mpg difference between these two?

I know for RS's 98 Ron is recommended, 97 and 100 both are not matching. Which way is better higher octane rating or lower than required?

Thanks for the replies.

 

[Ali]

you won't notice a difference.

 

[S22 JGS]

Ron 100 is better... just means its purer and burns better. In theory will see slight gains, but too marginal to pay the difference for if its a large difference.
You cna also get a gain in MPG is you drive like a granny :rasp:

 

[en035]

Ron 100 is better... just means its purer and burns better. In theory will see slight gains, but too marginal to pay the difference for if its a large difference.
You cna also get a gain in MPG is you drive like a granny :rasp:

This last comment is absolutely true, observed slightly better mpg when Ron 100 is used.

 

[Batman]

i use v power 100 all the time and get slight better mileage then wen i was running peseant fuel when i first got it