Topic: What does RON have to do w/ the octane of our present pump fuel ?

[grcamna2]

Want to know if the octane on the pump matches my bikes needs for it;my manual says "91 RON" and just wanted a few other opinions.

[dusterdude]

Probably not.the octane rating system changed sometime in the 70's,not sure when tho

[flatlander]

RON is a standard so i would expect 91 RON to be 91 RON no matter if in the 1970s or 2015.
pump gas in europe is measuered in RON. but the octane number on the pumps in the US is not RON but something else if i remember correctly, so the indicated numbers would need to be converted (don't know the factor).

someone more knowledgeable may correct me if i'm wrong.

[dusterdude]

Its ron divided by something else.so hence ron doesnt work anymore

[Bob Wessner]

Here's a pretty good explanation;

 http://m.cartalk.com/content/what-formula-gas-pump-all-about