Fuel Nozzle Color Codes

[chuck]

Colorado also has a higher elevation. Less oxygen up there. this may require a different type of gasoline if your car is not setup to be in Colorado.

I know about Utah because it was something I Googled at the next gas refill in western Colorado (back side of the Rockies). The gas pump ratings were more like what I see in Michigan. I am pretty sure that the cost of the "regular" with its lower Octane rating pushed me to try the E-85. That's when I found out that the range of a full tanks was significantly lower than "real gasoline". Car had no performance issue, just the fuel consumption was higher (there is a button on he driver information center that gives a readout of instantaneous fuel economy). We still made it across Utah and the next fill up was in western Colorado. Price difference between regular and E-85 wasn't that great so I switched back to "regular". I suspect the same reasoning for the lower octane numbers in Utah would apply to Colorado as well.

[webenda]

can you find a date for that article ? Back in November Philly change to a kinder more gentle police force. No more tickets handed out for stop sign violations.

Article 3323 of State of Pennsylvania Title 75 law in effect as of January 28, 2021:

§ 3323. Stop signs and yield signs.
(a) Intersections controlled by signs.--Preferential right-of-way at an intersection may be indicated by stop signs
or yield signs as authorized in section 6124 (relating to erection of traffic-control devices at intersections).
(b) Duties at stop signs.--Except when directed to proceed by a police officer or appropriately attired persons authorized
to direct, control or regulate traffic, every driver of a vehicle approaching a stop sign shall stop at a clearly marked
stop line or, if no stop line is present, before entering a crosswalk on the near side of the intersection or, if no
crosswalk is present, then at the point nearest the intersecting roadway where the driver has a clear view of approaching traffic
on the intersecting roadway before entering. If, after stopping at a crosswalk or clearly marked stop line, a driver does not
have a clear view of approaching traffic, the driver shall after yielding the right-of-way to any pedestrian in the crosswalk
slowly pull forward from the stopped position to a point where the driver has a clear view of approaching traffic. The driver
shall yield the right-of-way to any vehicle in the intersection or approaching on another roadway so closely as to constitute
a hazard during the time when the driver is moving across or within the intersection or junction of roadways and enter the
intersection when it is safe to do so.

The other document is the Pennsylvania Driver's Manual dated March, 2019.



The Philadelphia police can go back to enforcing the state requirement to stop at stop signs at any time. Maybe they already have.

[webenda]

Back to fuel/gasoline.
When I was last in Colorado, late 20th century, gasoline octane ratings seemed to be 3 to 5 points lower than in Georgia and the states in between.
I did not notice if e-85 was involved. The "peppiness" of driving response did seem to be less.
Why would Colorado have lower octane ratings?

Octane Ratings At Altitude
Because the air is less dense, less air flows to your car's engine. This translates to a slightly richer air-fuel ratio, and deters engine knock. For that reason, you'll find that regular gas carries an 85 octane rating in Denver and throughout Colorado, Wyoming, Utah and Montana. You don't need 87 octane if you richen the air/fuel mixture. This richening is automatic for carburates. (Bad news is, if you buy 85 octane and still have it in the tank when you reach lower altitude, the engine may have knocking.) In newer cars, if the computer hears knocking, it richens the mixture to stop the knocking.
Reference: https://en.wikipedia.org/wiki/List_of_U ... ne_ratings

[rogruth]

Thanks, Wayne. Colorado is the only one of those states I have been to.