When I bought my first gallon of 25:1 two stroke (for the boat, I was too young to drive) it was 6s 8d (about 34 pence). Standard unleaed now works out at around £4.60 per gallon.
When this government came to power (not being political, just a measure of time) I could not fit £15 of petrol into the Traveller. Last week I put over £25 worth into the same tank.
Marine diesel (pink) used to be 95p per gallon, now it's over that per litre, and thanks to the EU is about to be taxed even higher.
We have to face it, use an engine of any sort and get stitched up, primarily by tax.
