We all know that Japanese petrol is 99 RON (if not 101) and made by the great petrol Gods of mount speedy? Well here is the low down on a Skyline Owners second home.
However, similarly in the US and UK, whether or not there is a difference at all is up for debate. The general idea with cheap petrol in England, at least, is that it's used to attract customers to what is usually a supermarket. In Japan, the cheap petrol is from "unnamed" standalone stations (i.e. not the big players like Shell etc). There doesn't seem to be any solid proof that anyone's gas is better or worse than anyone elses..
You've probably heard of the Japanese gas station attendants and their ridiculous over-courtesy. It's true, but there are also self-service stands which will save a couple of yen per litre. These stand out with the セルフ (serufu) sign. So, for the cheapest fuel find a city relatively close to a port (at least without mountains in the way) and go self-service.
You can also save a few yen with store discount cards, so snap one up if you see them at your local Eneos or Cosmo etc.
Now it this all sounds depressingly familiar consider those that do not live in the city it's much more expensive to fill your tank there than in other places. in the mountains, Petrol tankers aren't allowed to drive through tunnels because of the potentially devastating results of an accident, so to get to cities like mine they need to do some massive detours. This results in an almost 10% markup.
The current price of fuel in Japan sits at 120 to 124 yen per liter (about £0.88) compare that to the UK at £1.20+ for a high RON and I am starting to thing that just maybe there really is a petrol God!