Fuel type
Race Director
Joined: Nov 2006
Posts: 13,151
Likes: 7,765
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
What engine? What compression ratio? What tune?
Box stock?
Camel **** will do.
Box stock?
Camel **** will do.
Thread Starter
7th Gear
Joined: Apr 2024
Posts: 7
Likes: 2
Thank you for your comments. It's an L-48. We are currently using ethanol free, 92 octane. I don't know compression ratio, tune and Box stock?
My question is, would using ethanol free 92 octane gas cause an odor to come through the engine into the passenger area? We had it in storage for several decades and had it repaired last year so it has a new gas tank, seals, catalytic convertor, fuel pump, hoses, bearings, fuel pump, and a whole list of parts replaced. The odor seemed a little stronger the other day when I drove it. We live in Minnesota if that makes a difference. Maybe it just needs more air fresheners
Thanks in advance!
My question is, would using ethanol free 92 octane gas cause an odor to come through the engine into the passenger area? We had it in storage for several decades and had it repaired last year so it has a new gas tank, seals, catalytic convertor, fuel pump, hoses, bearings, fuel pump, and a whole list of parts replaced. The odor seemed a little stronger the other day when I drove it. We live in Minnesota if that makes a difference. Maybe it just needs more air fresheners
Thanks in advance!
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
There are virtually thousands upon thousands of old classic cars driving around perfectly fine on plain ol' gas every day.
Your Vette is no exception and will be just fine on regular gas.
Ethanol Free is a waste of money with one exception:
The last full tank / fill-up of the season before storage.
Your Vette is no exception and will be just fine on regular gas.
Ethanol Free is a waste of money with one exception:
The last full tank / fill-up of the season before storage.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,009
Likes: 4,166
From: US-PNW
There are virtually thousands upon thousands of old classic cars driving around perfectly fine on plain ol' gas every day.
Your Vette is no exception and will be just fine on regular gas.
Ethanol Free is a waste of money with one exception:
The last full tank / fill-up of the season before storage.
Your Vette is no exception and will be just fine on regular gas.
Ethanol Free is a waste of money with one exception:
The last full tank / fill-up of the season before storage.
Rather than ethanol-free all year, I am bucking my past habits this year by using top-tier fuels (~$4.25/gal) with a final ethanol-free tank (~$5.60/gal) at the end of the season. From what I understand, the top-tier fuels likely have better detergent additives than the non-brand local stations. The top-tier cost is much less than ethanol-free, so I feel it's a slight upgrade in quality over the offerings at Gus's Gas'n'Go while saving a bunch of change.
Last edited by barkingrats; Jul 10, 2025 at 12:33 PM.
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1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,009
Likes: 4,166
From: US-PNW
Thank you for your comments. It's an L-48. We are currently using ethanol free, 92 octane. I don't know compression ratio, tune and Box stock?
My question is, would using ethanol free 92 octane gas cause an odor to come through the engine into the passenger area? We had it in storage for several decades and had it repaired last year so it has a new gas tank, seals, catalytic convertor, fuel pump, hoses, bearings, fuel pump, and a whole list of parts replaced. The odor seemed a little stronger the other day when I drove it. We live in Minnesota if that makes a difference. Maybe it just needs more air fresheners
Thanks in advance!
My question is, would using ethanol free 92 octane gas cause an odor to come through the engine into the passenger area? We had it in storage for several decades and had it repaired last year so it has a new gas tank, seals, catalytic convertor, fuel pump, hoses, bearings, fuel pump, and a whole list of parts replaced. The odor seemed a little stronger the other day when I drove it. We live in Minnesota if that makes a difference. Maybe it just needs more air fresheners
Thanks in advance!
Last edited by barkingrats; Jul 11, 2025 at 07:39 PM.
Melting Slicks
Joined: Sep 2010
Posts: 3,255
Likes: 687
I run non-ox in all my small engines and my 3 hot rods. 87 octane in my wife's and my daily drivers. Around here 91 octane is about 60 cents a gallon more than 87.
Don't put many miles on the hot rods so the cost is not a big deal.
Don't put many miles on the hot rods so the cost is not a big deal.
Race Director
Joined: Nov 2006
Posts: 13,151
Likes: 7,765
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
The real concern here seems to be if one type of fuel will cause more of a smell in the car. If I read that correctly anyway.
Answer , No.
A leak will cause a fuel smell.
Answer , No.
A leak will cause a fuel smell.