In the US so I use average of RON and MON.
87 E10.
When convenient I will use conventional unleaded but still 87
Mike
87 E10.
When convenient I will use conventional unleaded but still 87
Mike
Joined Nov 2013
1K Posts | 1+
Inland SoCal
Better not admit that to your dealer, the manual specifies 90 minimum. Page 185 and elsewhere. And that's (RON+MON)/2. You are saving what, 20 cents per gallon? On a $15k bike? With our fuel prices at half of what our EU friends pay?
Even if the bike has anti-detonation control, which ******* the timing, you are missing out on some horsepower. If not, you are risking a melted piston. This is not a low compression engine. Your Bonnie had only 9.2:1, the 'Strada is 13.8:1.
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Thanks, will try some 93 next tank. Haven't noticed anything close to a ping but I don't press the HP limits.
Thanks again
Mike
Thanks again
Mike
Joined Nov 2013
1K Posts | 1+
Inland SoCal
I had a '95 Triumph 900 Trophy for many years. It spun a rod bearing at 2400 miles (casting flash in the oil gallery), and when it was apart they offered me some 12:1 pistons out of the Daytona. Unfortunately they did not figure in the CARB-spec cams, which had not enough overlap.
After a couple of dealer service visits, we noticed that the intake valves were closing up. After maybe 10k miles they were hammered, I still have one as a souvenir. A valve job and the right camshafts made it good to 65k miles.
Point is, you may not hear any pinging. I never did! On my old Brit singles, yes. But not these modern four valve liquid cooled designs.
PS: That bike, with no other mods and on the stock mufflers, made 99 on Mickey Cohen's dyno...
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In Japan, we have two standards; 96+ and 89+ RON.
I had better mix two of them, I always fill with 96+ for better performance.
Maybe it is too much. But I would like to fill with better fuel.
Regards,
HiroTokyo
I had better mix two of them, I always fill with 96+ for better performance.
Maybe it is too much. But I would like to fill with better fuel.
Regards,
HiroTokyo
Joined Aug 2014
17 Posts | 0+
Ozlo
98?
We have 95 and 98 here in Norway. I friend of mine said that his BMW GS 1200 loved the 98 octane. When he tried 95 it produced to much backfire, engine ran less smoth and actually ended up using more fuel. However that is a 1200 boxer engine from 2008.
I wonder why the manual doesn't recommend a preferred octane level. Since it's difficult to get a clear answer even in this thread, I'm going to try 98 now on my Saturday cabin trip to check if I notice any difference.
We have 95 and 98 here in Norway. I friend of mine said that his BMW GS 1200 loved the 98 octane. When he tried 95 it produced to much backfire, engine ran less smoth and actually ended up using more fuel. However that is a 1200 boxer engine from 2008.
I wonder why the manual doesn't recommend a preferred octane level. Since it's difficult to get a clear answer even in this thread, I'm going to try 98 now on my Saturday cabin trip to check if I notice any difference.
Joined Aug 2014
17 Posts | 0+
Ozlo
Thanx for the advice! I'll shift to 98. Can you give me a reason why 98 should be better than 95?
Joined Mar 2013
3K Posts | 161+
Naples, IT
Probably because modern EFI's will allow you to put nearly any test in, but will ****** timing and hence probably reduce power output with low octanes. They usually don't run as smooth and I wouldn't recommend doing it just to save money or what not.
I'm also a big fan of Seafoam fuel treatment. Look it up and you will find nothing but devoted users of this product. I add it every oil change in all my vehicles. I think it's very smart with the all the ethanol in our supply chain these days.
I'm also a big fan of Seafoam fuel treatment. Look it up and you will find nothing but devoted users of this product. I add it every oil change in all my vehicles. I think it's very smart with the all the ethanol in our supply chain these days.
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