you can use any grade of gas BUT it's best to use 90-92 octane in the city. this is because of all the stopping and starting
but you can use anything if you are doing any long trips. I use a little of everything from 87-91, I also use a good fuel injector cleaner while we are on the road. I put some in every three days or so just because of not being 100% sure of the gas quality. So far on this trip we have been lucky and used mainly Chevron or Shell gas
They'll run on ANY grade just fine; follow the manual if you want optimum performance from your bike.
For the record; I'll run 93 at every opportunity. The swill that they sell up here is 10% ethanol...
Here in the UK we are fortunate in having a minimum RON rating of 97 at the pumps which is equal to the US octane rating of 92-93.
But the big downfall is that it costs the equivalent of $6.40 per gallon and this is the lowest price its been in 6 months.
One of the UK fuel companies has just brought out a new fuel called Nitro+ which is US octane 95 which contains more friction modifiers than you can shake a stick at, if you believe what they say, the engine will wear less when running than when turned off.
In EU member countries the standard grade is an RON rating of 95, which is mid-grade. Bombardier recommends use of 95 or higher and does not recommend to use lower octane ratings - lower values are fading from the European market anyway due to a lack of need. In many places, you can get octane ratings (RON) of 98 and in some cases up to 102.. The Spyder engine won't ask for this and a theoretically improved fuel mileage from 98/102 grade fuel must be purchased for a lot of money.
I have owned my Spyder since summer 2012 now and never used anything different than 95 rated 10% ethanol fuel. Economy figures are the same as on other Spyders being run on 95 at 5% ethanol as well as on Spyders run on 98 grade fuel. Same results on my business car; it's a Toyota Prius doing 25k miles per year. And same as on my 1970 Austin.
I never add any additives and will continue to do so until I have some conclusive evidence that they do something positive that I cannot have from standard fuel. Until then I consider them a waste of money, keeping in mind that motor vehicles are always designed and validated to run on any fuel complying to national or international standards.
89 is the middle grade in the US typically. 87 is regular. 93 is usually hard to find. most stations in ohio have 2 to 3 grades: 87, likely 89 and some with 91 or 92.
up to 10% alcohol is acceptable for most everyday engines these days. system components wont degrade unless the components are 30 / 40 years old or older.
no alcohol will produce better gas mileage, although light throttle usage helps even more!
wont use additives either unless there is a verified study that available gasolines are inadequate...
city driving (stop and go driving...) will almost always produce lower gas mileage, comparable to high sustained speeds. moderate, steady speeds produce the best overall gas mileages...
I use 89 octane and Spyder seems to run better than on 91 Premium.
I also every 3rd fill-up add the best kept secret in history, about 1/4 cup Marvel Mystery Oil!!
The spyder runs much better after that is added. I was once told by an engine rebuilder that Marvel Mystery
Oil is the best fuel additive in the industry. I use it in my cars and it really makes a difference.