US fuel grades versus CDN fuel grades.

[spikerS]

So this last weekend was my first trip driving in the states where I had to worry about the fill ups and such.

I know my truck is twin turbo'd, but the manual says to use 87 octane unless towing, and if I am, use 91.

So when I did my first fuel up down there, I noticed the numbers on the pumps were different.

In Canada: 87 89 91
in the USA: 85 88 91

So being cautious, I filled up with 88.

So what's the difference here? Why the different fuel grades between the countries?

[jacky4566]

Rednecks don't use fancy gas :dunno:

[Sentry]

Both canada and USA use AKI octane rating.

[Aleks]

There is no difference. You just happened to be in a specific region. They have all the octane ratings we do and more.

They have 85 down there because a lot of cars at higher altutudes such as here can get away with lower octane and don't even need 87.

http://upload.wikimedia.org/wikipedia/commons/0/0f/Gas_Station_Pump_Five_Octane_Ratings.jpg

[rage2]

85? Must be Colorado.

[spikerS]

Originally posted by rage2
85? Must be Colorado.

Nope, we went down I-15 as far as Great Falls, Montana.



lol, and I missed this, 85.5....http://i14.photobucket.com/albums/a334/Snorakk/20130504_115541_zps18c30191.jpg

the other pic I had to track fuel milage cut off the fuel grades.

[artieg30]

Just to chime in, when I was in Seattle a few years back they had 92 octane gas at shell!

[JAYMEZ]

Was just going to say its probably Idaho or Montana LOL..