sburns
Well-known member
I was at Ultramar today at 48 and Aurora and all of them said may contain 10% ethanol.Some Ultramar blends are ethanol free.
I was at Ultramar today at 48 and Aurora and all of them said may contain 10% ethanol.Some Ultramar blends are ethanol free.
I was at Ultramar today at 48 and Aurora and all of them said may contain 10% ethanol.
Current bike demands it per the service manual. Previous bike demanded 87, but previous owner always pumped 91, so I continued with it. I know it was overkill.does everyone here actually use 91 in their bikes?
I guess that’s a side question but it’s pretty expensive these days
I mostly agree, but it is a little more complicated than this with some modern cars. Some cars only require 87 but to achieve the hp numbers quoted they need 91. They basically pull timing when run on 87 which cuts 5% or more of the horsepower. I am sure if bikes aren't there yet, they will be soon. I actually like this approach as most of the time I am not interested in the extra fuel cost just to have a bit more power available for the occasional full throttle run. I just wish manufacturers would be straight up and actually publish power numbers with the minimum required fuel as well as premium fuel.and your engine doesn't require high octane, IMHO you're wasting your money - same goes for your car.
My bike manual states to run 91. But I was talking with someone and they mentioned not all grades are what they say they are. Meh who knows. I am currently testing out 87 on a couple of tanks to see if it makes any difference.does everyone here actually use 91 in their bikes?
I guess that’s a side question but it’s pretty expensive these days
Manufacturers have to provide a safe fuel spec for any situation. Climbing a mountain in a hot climate is much more likely to trigger detonation than cruising the 401. You may find that 87 works for you most of the time.My bike manual states to run 91. But I was talking with someone and they mentioned not all grades are what they say they are. Meh who knows. I am currently testing out 87 on a couple of tanks to see if it makes any difference.
Huh whatch u talking about Willis?? ?Manufacturers have to provide a safe fuel spec for any situation. Climbing a mountain in a hot climate is much more likely to trigger detonation than cruising the 401. You may find that 87 works for you most of the time.
Huh whatch u talking about Willis?? ?
If your bike explodes in any circumstance that would seem very strange.
Mine does, but so far I’ve just been running 87Those running 91 cause the manual says so.....does the manual say 91 RON?
I mostly agree, but it is a little more complicated than this with some modern cars. Some cars only require 87 but to achieve the hp numbers quoted they need 91. They basically pull timing when run on 87 which cuts 5% or more of the horsepower.
I just hang around here because it's fun, but you guys really know your stuff, so now I need to learn stuff here toodetonation GG is referring to is premature ignition
lower octane fuels in high compression engines can set off early
results in the expansion force downward while the piston is still in upstroke
over time this will break things
usually only happens when you start to play with engines - turbos and stuff
my turbocharged Subie has a detonation sensor that changes the fuel map
if you put regular gas in it, to prevent detonation, runs like a POS like that