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Gas in the 80's vs Today #5354950 02/19/20 10:34 PM
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alcyon Offline OP
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I saw a video of a dude adjusting the tension on his older car from the 1980s that uses Air Flow Meter (flap type).
He was basically tightening the spring so that the flap door opens less and the ECU would think the engine is getting less air, hence inject less fuel (less rich). He said something about the stock tune was for Gas of that time, the 80's.
Which got me thinking, not counting lead, what else has changed in regards to Gasoline formulations then vs now ? Does it burn differently ?


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Re: Gas in the 80's vs Today [Re: alcyon] #5354955 02/19/20 10:39 PM
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I remember pumping Premium gas back in the 70s. It had a reddish tint to it and a sweet smell. Nothing like what we have today.


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Re: Gas in the 80's vs Today [Re: alcyon] #5354977 02/19/20 11:21 PM
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1980s car engines required unleaded---as did most from the late 1970s as well. They shouldn't need any mixture correction for 2020 fuel, as far as I know; if so, small. My 1981 car ran well on 2014 gasoline.

^ That reddish tint indicated presence of lead.


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Re: Gas in the 80's vs Today [Re: alcyon] #5354980 02/19/20 11:26 PM
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aquariuscsm Offline
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Originally Posted by alcyon
what else has changed in regards to Gasoline formulations then vs now ?


Gas now has crappy ethanol in it.


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Re: Gas in the 80's vs Today [Re: aquariuscsm] #5354990 02/19/20 11:52 PM
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oldhp Offline
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Originally Posted by aquariuscsm
Originally Posted by alcyon
what else has changed in regards to Gasoline formulations then vs now ?


Gas now has crappy ethanol in it.


Yep. With less MPG. Less power. More pollution.


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Re: Gas in the 80's vs Today [Re: CR94] #5354996 02/19/20 11:58 PM
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Originally Posted by CR94
That reddish tint indicated presence of lead.

Premium gas had red dye. Basic gas had amber dye. And purple gas had....wait for it.... purple dye.

Purple gas was for off road use only, agriculture and the like. And I've always believed (could be wrong) that the red and amber colours were simply to make sure you were getting what you paid for.

Come to that, they all had lead in them.


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Re: Gas in the 80's vs Today [Re: alcyon] #5355032 02/20/20 01:59 AM
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Actually "crappy ethanol" can make slightly more power. It does not give better fuel mileage as the ratio of race engines, or drag racing engines like TA/FC burn 2.3/ 2.4 times the amount of methanol as a gas motor would.

Research E85 turbo tuned vehicles. they burn a heck of a lot of fuel, and can't pass a fuel station, but they are faster than any gas tuned turbo.


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Re: Gas in the 80's vs Today [Re: aquariuscsm] #5355035 02/20/20 02:04 AM
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Originally Posted by aquariuscsm
Originally Posted by alcyon
what else has changed in regards to Gasoline formulations then vs now ?


Gas now has crappy ethanol in it.



One of the FEW things I miss about Oklahoma was a CHOICE of non-ethanol fuel. I ONLY run non-ethanol 91 octane in my 82 Trans AM KITT


Dave

Last edited by GMguy84; 02/20/20 02:07 AM.

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Re: Gas in the 80's vs Today [Re: alcyon] #5355037 02/20/20 02:06 AM
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The rumor that Gale Banks had the fastest altered 1/4 mile Drag racing truck on diesel, it never smoked? Why.... Everyone that know jack about diesels figures he was running mostly alcohol, not diesel.


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Re: Gas in the 80's vs Today [Re: GMguy84] #5355038 02/20/20 02:08 AM
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Originally Posted by GMguy84
Originally Posted by aquariuscsm
Originally Posted by alcyon
what else has changed in regards to Gasoline formulations then vs now ?


Gas now has crappy ethanol in it.



One of the FEW things I miss about Oklahoma was a CHOICE of non-ethanol fuel


Dave


I can buy it here all over the place, but its 70 to 80 cents a gallon more for a mile or two per gallon.


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00 F350 139k M 1300 15w40
Re: Gas in the 80's vs Today [Re: alcyon] #5355042 02/20/20 02:31 AM
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100 ctane leaded fuel was available at the pump in the 80s. they called it 5 star. 5 star was the goodness.
4 star was 98 octane leaded
3 star 93 octane leaded
2 star 87 octane leaded.

32/33/34 pence per litre compared to todays 125 pence per litre


Cable ties should hold it
Re: Gas in the 80's vs Today [Re: KneeGrinder] #5355046 02/20/20 02:37 AM
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Olas Online Content
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Originally Posted by KneeGrinder
The rumor that Gale Banks had the fastest altered 1/4 mile Drag racing truck on diesel, it never smoked? Why.... Everyone that know jack about diesels figures he was running mostly alcohol, not diesel.



he was using diesel at a sensible and realistic AFR. Smoke means too much fuel, the easy solution then is to add more air and PRESTO! no more smoke


Cable ties should hold it
Re: Gas in the 80's vs Today [Re: Olas] #5355052 02/20/20 02:49 AM
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Originally Posted by Olas
Originally Posted by KneeGrinder
The rumor that Gale Banks had the fastest altered 1/4 mile Drag racing truck on diesel, it never smoked? Why.... Everyone that know jack about diesels figures he was running mostly alcohol, not diesel.



he was using diesel at a sensible and realistic AFR. Smoke means too much fuel, the easy solution then is to add more air and PRESTO! no more smoke


Its not that simple...He was cheating, everyone knows it. Lean out too much too quick and kaboom, or melt down. His truck ran clean like an alcohol motor. It had some diesel, but it had ALOT of alcohol in the fuel.

Had you ever seen his truck some 15 years ago, it was a tube chassis running 7's


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03 Acura CL-S 90k M1 AP 5W20
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Re: Gas in the 80's vs Today [Re: alcyon] #5355054 02/20/20 02:55 AM
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Olas Online Content
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oxygenated diesel is common and available, same as oxygenated gas. its doesnt change the fact that 'rolling coal' comes from too rich an AFR, and a properly tuned diesle engine will make plenty power without smoke as a function of correct AFRs. SMoke is rich, no smoke is correct.


Cable ties should hold it
Re: Gas in the 80's vs Today [Re: GMguy84] #5355057 02/20/20 03:06 AM
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Originally Posted by GMguy84
Originally Posted by aquariuscsm
Originally Posted by alcyon
what else has changed in regards to Gasoline formulations then vs now ?


Gas now has crappy ethanol in it.



One of the FEW things I miss about Oklahoma was a CHOICE of non-ethanol fuel. I ONLY run non-ethanol 91 octane in my 82 Trans AM KITT


Dave



Dave have you checked out the website listing all ethanol free gas stations ??

Maybe some in your area... An idea to think about.. I'm guessing.


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