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 What grade of gas are you using for your classic min

 Created by: 6464s
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 Posted: Jan 9, 2024 12:35PM
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I use 93 octane 5% gasohol because: *No-ethanol premium is no longer available here close by. *my 1275 mini has ethanol -resistant carb parts and high compression.

However - If I could get 93 octane with no ethanol I would prefer it. Like my chain saws, mowers, etc the mini gets only intermittent use and ethanol is problematic in that setting.

way back in the 1964 when I was in 8th grade, I did a chemistry project distilling/fractionating sub-regular grade gas (Sunoco 190) and compared it to premium (Sunoco 260) . Looking back, the teacher was insane to let me boil 100 ml of gasoline in a glass flask in a room with 25 other kids, no matter that the heat source was an electric pad and not a flame.

The sub-regular grade gas had 3 % black tar. The premium was crystal clear.

 Posted: Jan 9, 2024 06:38AM
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CA

6464s   What Alex says is spot on.

I've been running my stock 998 and mildly tuned 1130 on regular gas for a few years.....since prices went silly.  I don't notice any performance issues over the premium.  I do however fill the tanks with premium in the fall for hibernation.

 

"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May

"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge

 

 

 

 Posted: Dec 19, 2023 03:58AM
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GB

It entirely depends on the state of tune of your engine, how you drive, whether your fuel system is ethanol proof, and whether you care about fuel consumption.
The A-series in standard form will run on anything - it harks back to the days of 2* and 3* petrol; anything we can buy now is better than what was available (sub-5* or avgas) in 1959-1980.

The higher the ethanol content, the worse the consumption is.  Somewhere around 3-4% worse for every 5% of ethanol content.


A std SPi will run on anything commercially available in the USA.

 Posted: Dec 16, 2023 10:35AM
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I've used Premium no-ethanol for years. It uses so little gas I figure it's worth the difference in price. Mine does have a skimmed head for higher compression, but I would run the Premium anyway. I don't know what ethanol would do for our old fuel systems, not gonna gamble.

 Posted: Nov 30, 2023 06:31AM
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Thanks Dan. By the looks of things, it seams everyone has gone electric and no one on this site uses gas any more.

 Posted: Nov 27, 2023 12:13PM
 Edited:  Nov 28, 2023 06:07AM
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CA
It probably has more to do with your engine's compression ratio. Mine has a MG Metro engine with 10.5:1 compression ratio, so it gets premium. I suppose another consideration is where you live and what additives are in the different grades. How much ethanol? I have heard though not confirmed that premium has a preservative so you don't need to add stabilizer, which I use anyway so I know the gas won't go stale quickly.

That being said, I probably will have to drain my Mini's fuel in the spring as I was not able to drive it this past season due to medical issues.

(edited for fat-finger typos)

.

"Hang on a minute lads....I've got a great idea."

 Posted: Nov 27, 2023 09:12AM
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I have an SPI and have been using premium. Am I wasting my money?