What gas do you put in your classic Mopar?

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65Valiant_NC said:
I work at a fuel terminal and the more important thing is to buy branded rec gas. Tankers where I work normally load 8800 gallons so if the whole tanker is loaded with branded rec gas it will have close to a gallon of additive in it versus unbranded which might have a pint. People say all the time that gas is gas but not true. There is a formula called "driveability" and places like S****z sell fuel that barely meets the minimum requirement. Always run branded gas whether rec or E10.
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I've heard this before, what kinds of additives are we talking about? What specific effects on an engine do they have? I've always wondered this because I've never been able to notice a difference in how any of my gas-powered devices run with expensive Shell gas vs. the cheapest stuff I can find (around here that would be Valero, Kroger gas stations, Murphy USA etc.). Harmful deposits don't bother me a whole lot because I'm meticulous about maintaining my engines, I tend to carbon-clean stuff fairly often and I drive my vehicles pretty hard at least once each trip I make.
 
MopaR&D said:
I've heard this before, what kinds of additives are we talking about? What specific effects on an engine do they have? I've always wondered this because I've never been able to notice a difference in how any of my gas-powered devices run with expensive Shell gas vs. the cheapest stuff I can find (around here that would be Valero, Kroger gas stations, Murphy USA etc.). Harmful deposits don't bother me a whole lot because I'm meticulous about maintaining my engines, I tend to carbon-clean stuff fairly often and I drive my vehicles pretty hard at least once each trip I make.
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Your branded gases generally can have up to 4 detergents in them, friction modifiers, an anti adhesion chemical so detergents cannot "stick" to anything, corrosion inhibitors, demulsifiers, some sort of chemical to keep the additive in suspension with the gas and markers. Markers are like DNA for the additive and no companies share the same markers. Unbranded additive will only have some of the same components branded does. Generally "generic" additive is heavily naptha based. E***n has gone as far as to put extra additives in their branded diesel now.
 
I could save close to $1 a gallon if I switched from non-ethanol to 10%ethanol. And daily driving at 12 mpg I would love to save that $1
 
Shamrock--WV2NC said:
I could save close to $1 a gallon if I switched from non-ethanol to 10%ethanol. And daily driving at 12 mpg I would love to save that $1
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If you're daily driving the car I would say just do it. Keep an eye on any rubber sections of the fuel line but as long as the car doesn't sit for weeks at a time there should be no risks involved.

I've personally only seen fuel system damage from ethanol in cases where the engine sat for months/years, although I do live in a dry climate it could be worse in more humid areas (ethanol absorbs water out of the air).
 
65Valiant_NC said:
Your branded gases generally can have up to 4 detergents in them, friction modifiers, an anti adhesion chemical so detergents cannot "stick" to anything, corrosion inhibitors, demulsifiers, some sort of chemical to keep the additive in suspension with the gas and markers. Markers are like DNA for the additive and no companies share the same markers. Unbranded additive will only have some of the same components branded does. Generally "generic" additive is heavily naptha based. E***n has gone as far as to put extra additives in their branded diesel now.
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Thanks for the info, so how does that naptha-based cheap stuff work differently? Does it evaporate faster? Also just curious why you 'bleeped out' the oil company names do they monitor the web for mentions of their names? I sometimes do that for big tech companies like G****e or F****ok lol
 
In NC you can get 90 octane recreational fuel at gas stations and it has no ethanol so that is what i was using and when i get my car going again its what ill use again.
 
There is a site, pure-gas.org ,it will tell you all the ethanol free gas stations all over the U.S.

Jeff
 
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MopaR&D said:
Thanks for the info, so how does that naptha-based cheap stuff work differently? Does it evaporate faster? Also just curious why you 'bleeped out' the oil company names do they monitor the web for mentions of their names? I sometimes do that for big tech companies like G****e or F****ok lol
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It's kinda like using Tide laundry detergent vs. the stuff in the plain white box that says "laundry detergent" on it for a tenth the price. Both will clean your clothes but I'll put my money on the Tide. The generic won't evaporate but naptha is cheap so there is lots more profit.
 
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