Posted on 04/18/2018 3:40:59 PM PDT by outofsalt
"GM, Ford and Fiat Chrysler are seeking just one grade of fuel: 95. That would eliminate today's grades, generally 87 octane for regular, 88-90 for midgrade and 91-94 for premium." "In testimony Friday before the House Energy and Commerce Committee's environment subcommittee, Dan Nicholson, General Motors' vice president of global propulsion systems, said making 95 octane the new regular aligns the U.S. with Europe and is one of the most affordable ways to boost fuel economy and lower greenhouse gas emissions."
(Excerpt) Read more at autonews.com ...
I’ve read it. That vintage motorhome serves multiple purposes, a hobby, a cheap weekend or even weeklong getaway, a man cave and a lifeboat. Has a 6000 kw generator on it, upgraded batteries, working on solar. Power out can run appliances in the house in the event of an ice storm or other power outage, when connected to a dedicated generator panel. That required some work, pure sine wave inverter and such.
Wow, what you wrote sounds like my relative, who told me almost exactly the same thing. If you ever have a question about it, PM me, you should talk to him. He was in charge of a lot of things concerning the GMC motorhomes at that time and lectured on it for trainees or something like that.
Good luck and God bless with your GMC baby.
Most excellent response.
I can’t precisely quote the equation at this moment, but it states where “r” is the compression ratio, efficiency is proportional. Raise “r” and the economy increases provided...you’re feeding the correct fuel into a higher r engine.
By their very nature diesels kick the tar out of gassers with respect to economy: vastly higher r, more specific heat value than gasoline and slow burning making for great BMEPs on the piston crown.
“Average Cost Gallon Of Gas
1930 10 cents , 1940 11 cents , 1950 18 cents , 1960 25 cents ,
1970 36 cents , 1980 $1.19 , 1990 $1.34 , 2009 $2.051 , 2013 $3.80.”
An inflation rate trend line would need to be plotted along with the cost for the data to be meaningful.
I have no desire to be like eUrope.
Thanks.
Even the greenies don’t like the corn anymore.
Well that makes it easy, about half a tank.
We could do both.
Think taxes, not cost of raw materials + refining. Brought to you by European socialists. Errr... Canadians suffer from the same disorder - Their gas pump price is about 50% more than the USA max.
And get rid of the ethanol mandate that reduces mileage by at least 10% from that possible with pure gasoline. Percentage based upon my own experience with drop in mileage when ethanol was mandated to be blended into gasoline.
“Also back in WWII we produced 115 octane aviation fuel and it made a difference in performance”
Basic thermodynamics says that a higher compression ratio results in a more efficient engine. A higher compression engine requires a fuel with more resistance to pinging (detonation) which will damage the engine. Higher octane gasoline simply has better resistance to pinging. It has no more energy per pound of gasoline.
The airplane engines needed to get as much power as possible per pound of engine weight. The cost of the fuel wasn’t important.
Meanwhile, jet engines couldn’t care less about octane rating. The plane problem is solved but we motorists care how much it costs to drive a mile.
I don’t want a higher octane fuel unless it means I can drive cheaper.
If your vehicle calls for “regular”, know that it will get 10-15% better mileage on “premium”.
And your fuel intake system will last longer.
How about the government make rules to simplify low fat milk or sodium content?
Don’t get caught up in a liberal issue. To them it’s the indoctrination that counts.
If Trump were a car guy and knew that it’s WORSE for the environment, he’d outlaw ethanol gas.
Entirely false and backward.
The more octane, the more additives equals lower percentage of fossil fuel.
You will get better mileage on less octane as long as your engine won't ping from valve clatter.
It causes more nasty, lung irritating smog generating pollution while cutting back on non-toxic CO2 global warming [sic] "emissions".
This has scam written all over it.
While trying to diagnose the problem, I held the governor rod to the carb steady and the rpm's smoothed out and it didn't stall or rev. Made me wonder if the issue could be in the governor rather than the carb.
The fresh higher octane fuel probably cleaned out some of the garbage trapped in the fuel system is my theory.
In my Tahoe I have tested the premise, and verified it.
My mileage range goes from 16 even (87), to 17.8 on 91 octane.
Freeway mileage on long trips.
At least 800 miles.
You can argue what should be and what the science says until you are blue in the face.
I have real test results, verified at least 10 times with precise measure.
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