gpz1100abs at gmail.com
Tue Nov 12 03:15:15 PST 2013
Thanks for the info on this. I wasn't aware of this difference. I've
seen low octane gas (in the eighties) mentioned a couple of times on
this list and thought that was weird because the user manual says 91
minimum. But this explains it, thanks for the reference.
In DK there is a law that requires the petrol companies to add 5% bio
fuel to the gas and 7% bio diesel to the diesel so there is no way to
avoid this anymore. I think it's the same in Germany, but in addition
most gas stations there offer something called E10 which is gas with 10%
bio fuel. From what I hear from my German friends this is not at all
popular because of lower gas mileage and poorer engine performance. I
haven't heard of any motorcycle rider would put this in his tank.
The ultralight and motorglider community mostly uses engines that run on
ordinary car gas and there has been several incidents with clogged
filters, leaking fuel lines, tanks or carbs because the alcohol eats
certain materials of which hoses, coating, gaskets etc. are made of. In
our local flying club we used to pick up gas from the nearby gas station
using jerry cans, but it turned out that the coating on the inside of
the cans were dissolved and filled the filters with crud. We use some
special plastic cannisters now. Normally we have a 100 hour inspection
interval on the planes, but our motor specialist now performs some extra
checks related to the fuel system every 50 hours just to be sure.
Den 12-11-2013 00:49, schnowz skrev:
> Ped I'd forgotten the European rating is different to the US.
> which I believe gives a higher number in Europe for the same gas.
> from Wiki
> On the East coast here most gasoline has 10% alcohol which gives lower gas mileage. It could be that Colorado at that time had no alcohol.
> "In most countries, including Australia and all of those in Europe, the "headline" octane rating shown on the pump is the RON, but in Canada, the United States, Brazil, and some other countries, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI, and often written on pumps as (R+M)/2). It may also sometimes be called the Pump Octane Number (PON).
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