Depends on ACTUAL MOTORCYCLE, ACTUAL FUEL in market. E10 with 10% ethanol in USA markets various states can be a problem in vehicles made before 1987, sometime a fatal problem- the Carter Carburator used in some 1970 era medium cars- chrysler slant 6, ford 200 inch series and some AMC had a accelator pump diaphram that would be holed by the E10 later introduced, try to leave at green light, stall in middle of intersection and get hit by car from right angle as light changed . Harley not certifide for E10 until about 1985, Federal rules have 1987 date and my Goldwing G1000 has fuel pump with no newer replacement so will fail with E10 or even worse E15. Replaced with failed one with OEM pattern and I use local 91 octane NONETHANOL marked at pump as such. Same with CM400 that I had to clean carbs, BMW /2 and /5 also not made for ethanol - float made from some plastics will be eaten by ethanol, flood out, run very rich so use the metal floats, be prepared to change float needles. Petrol term implies UK poster, some minor problems noted for a few classics but I don't know of any fuel formula changes in that market other than long changed leaded to unleaded gasoline/petrol standards. Wouldn't surprise me to find out some 'clean burn' additives might mess up older fel systems.