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2009 Bonneville Black, What Kind of Gasoline for it?

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13K views 11 replies 10 participants last post by  brainbucket  
#1 ·
I bought my bike used and it did not come with a manual. Still have yet to buy one. Anyone know what kind of gas I should be putting in my bike? Regular, the next one up, or supreme (highest octane)? I've been filling it with high octane but not sure if that's cool.
 
#3 ·
No need to buy a handbook. You can download a copy of the owner's handbook from Triumph's website http://www.triumphmotorcycles.co.uk/motorcycles/handbooks Have you looked under the seat for the original?

The owner's handbook only contains basic maintenance info so you might still like to get a workshop manual. Currently only Triumph supply one which covers the EFI bikes, but there is one from Haynes for the carbed bikes.
 
#6 ·
Much of the US now runs on E10, no problem at all. In major urban areas, such as around here (Baltimore-Washington), there's nothing else available.

I use the mid-grade gasoline, 89 octane in the US system.
 
#7 ·
My '09 Thruxton owners' manual lists 91 RON, whatever that is [I think it is the formula used here in the USA to determine octane level]. I always put 87 octane in both my Hinckley machines with no apparent ills.
 
#9 ·
No. RON is used in most of the world apart from the US, Canada and a few other countries. You use AKI (also known as PON apparently). European 91 RON petrol is the equivalent of "regular" 87 AKI gas in the States, so you're using the "correct" grade.
 
#10 ·
Buggered if you do and if you dont!

Pretty sure that in OZ they say no to E10. Mind they also reccomend, Triumph that is, semi syn oil. Castrol dont have the grade of syn the rest of the world has. So be weary of details from other climes. The min octane in Aus for the twins is 95 which is mid range in unleaded. High is 98. This has no bearing on the US as there measurements are based on another formula. Higher octane fuels are more refined, therefore cleaner and will produce increaed performance, will you notice it? doubt it,so is al this worth the extra $?.
Me i always go for 95 if that is not available then 98.:D
 
#11 ·
As another OZ rider I have always used 91 RON in both bikes and they both run well with no indication of pinging that I can detect and both give good fuel economy as well.
So for me any higher fuel octane fuel rating is wasted expense.
 
#12 · (Edited)
91 RON Minimum

So I'm told that 95 RON is the same as 87 Octane in the United States. It does say "minimum" in the manual, so I suppose a little higher won't hurt. I guess I will use the medium mostly and occasionally the high octane at gas stations. Keep those tanks filled up! I almost ran out of gas last weekend out in the woods near the Molalla River. That would have been tragic leaving my Bonnie out there in the wilderness while I had to hoof it back to civilization for some gas. Would my dark lady have been there when I returned? Doubtful. Luckily, I coasted Black Bonnie on fumes and prayers from the middle of nowhere to a gas station called "Toad." How is that for weird. Toad. That's the name of it. For real. Saved by the toad. Only in a town called Mo La La, otherwise known as Molel in the ancient indian dialect. Spooky place up there, to be sure. Great for a bike ride, though. Except, the main bridge is out, and that is what spelled disaster for me, after I entered the Corridor through the back door, when I was planning on coasting down some of the most scenic pavement in Oregon, past the Mo La La on Black Bonnie with her Cowl on, which was little more than a few royal miles to town on a road with plenty of quaint farm houses and not so quaint double wides. But instead, with said bridge out and the gaping Maw of Mollala hissing up at me like dragon's laughter in the dark, I had to backtrack leagues upon leagues, journeying through the blasphemous hinterlands with only ravens, wild cats, and wolves to keep me company, plus a few rougher denizens than never show themselves unless they want your soul served up on a wooden dinner plate. Now that was a sobering moment to be sure and gasoline was the thing I lacked. At that point, I would have paid $100 a gallon. Thankfully, I did not have to, and I could not have done so even if I'd wanted, because I passed no one living until I reached the moss-ridden asphalt of Old Highway, and that was a mere hop skip and a jump from The Toad, which greeted us from a motley marque. Bonnie was quite thirsty under the blindingly white florescent lights, and she drank at Ye Olde Petroleum Well to her heart's content.