With the compression on the GW 1800 being relatively low is 93 Octane helpful or wasteful?
Higher octane only prevents pre-detonation in the cylinder. Most lower compression engines do not need the higher octane. Honda usually states in the manual which octane to use. On my 1200, 1500, 1800... 87 octane is it. If it was really hot and I was dragging a trailer up a lot of mountains I might throw in higher octane. Higher premium octane gas does usually have more cleaners in them to keep your fuel system clean. I use a bottle of my chosen fuel system cleaner at the beginning of each riding system for a few tanks and then again at the end of the season.With the compression on the GW 1800 being relatively low is 93 Octane helpful or wasteful?
You can do 85 due to the elevation. That's why mountain states have lower octane at 85Well,
It's pretty much the consensus that 87 is all that's needed. and, as of yet in the responses, no one's had any issues with 87 in any kind of mileage. I'll throw one more into the soup here. Living for most of my life in CA (had no choice at the time), all we ever had was 87 and 91. But, when we traveled on vacations, we'd hit states like UT that had 85 octane. The first time I encountered that, we pulled into the gas station, all I saw in my mind was Man, that's cheap fuel, better fill up even though we had a half tank. I'd been pumping for a couple of minutes before I realized that I was pumping 85 oct into my V-10 Ford Motorhome. OH CRAP!!
Well, too late to stop now so, I finished filling it up with 85. For the rest of that days driving, 'till we hit Moab UT, I was listening for knocking. None, absolutely none. Hmmmm. I thought. If nothing happened to that V-10 and, it's pulling a serious load with the motorhome and the Jeep, then, why not put 85 in the Jeep? So, I did. Again, nothing happened other than, the Jeep ran like it always has, like a top.
A couple of years later, we were in UT again traveling. Only this time, we had the Jeep AND the Wing. So, I figured the Jeep's doing fine with 85 in it, WHY NOT TRY IT IN THE WING???? So, in went some 85 into the Wing, our present one, an '08. Well, again, just like the motorhome and the Jeep, that Wing engine zoomed on down the road with no noises, great acceleration, normal power, no idle issues, etc.
So, to this day, the Wings had 91, 87 and 85 in it. And to me, it's ran the exact same, each and every time. And, contrary to some folks with their engines in other forums, the mpg NEVER changed for any blend of fuel.
You get better gas mileage at altitude because of the decreased drag on the motorcycle with the thinner air. I get better gas mileage at 75 in the Colorado mountains than I do at 55 in Kansas. I told my wife that we needed to move to Colorado to save money on gas for the bike but she saw right through that. She said the 30% better gas mileage won't make up for the 200% increase in miles ridden. I just can't get anything past her!I always buy the Lowest Octane on the pump, and never once had detonation issues.
at high altitudes, 85 is all the engine needs... funny thing that, in the mountains I always seem to get better fuel mileage than down home at 550 MSL.....
I think the reason is the average speeds that I ride up in the mountains, versus the Wide Open Throttle therapy that I do down here at home, where it is 100+ miles in a straight line from home to where I am going..... once you have seen a hay field, what is there to look at?