Quote:
Originally Posted by XLsior
In Australia we have individual hoses for each fuel type per bowser fill up station, But I believe In the US you have 1 hose with selectable fuel type...Depending on how small you motorcycle gas tank is...you're pretty much filling up on what the last guy had selected.
So you might as well just go with the cheapest and hope for free splash or 2 of free premium.
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Most pumps tend to be single hose here, yes. The difference is in the design of the pump and hose system. Not all of them actually retain alot of fuel, with most modern systems having a high meter with a drain-back system. Even a low meter system tends to have a drain-back on it and the "lost" volume that drains off is compensated for in the calibration of the pumps since it is an easily known volume. At most you might get a few fluid ounces of whatever the last guy had in the hose itself. Older pump systems may retain a bit more, but we are still talking a few ounces.
In reality, even in a couple of gallons, a few ounces of a different octane isn't enough to make any meaningful difference. A U.S. Gallon is 128 ounces, for reference sake.
My Honda is a high compression high specific output engine with an ECU tune on it meant for 91-93 (R+M)/2 octane rated fuel (95-98 in your terms). I have never had a single issue with filling it up at any fuel station. I have experienced what that engine behaves like with bad fuel too so believe me when I say... I would notice lol.