74 Big Block fuel additive
Team Owner
Joined: Jul 2004
Posts: 40,404
Likes: 791
From: Redondo Beach, California
The 91 octane fuels will be fine for your 74. I'd think...thinking of my situation..is that you should be concerned about the alcohol in today's fuels..about 10%. The alcohol absorbs water from the atmosphere, or condensation inside the fuel tank. Water laden fuel from alcohol will rot your pot metal Holley or Quadrajet carburetor and also the interior of the fuel lines and the interior of the fuel tank.
If you're driving the 74 a lot, water build up in the fuel is not a concern. If it's a hangar queen, I think there can be a problem.
If you're driving the 74 a lot, water build up in the fuel is not a concern. If it's a hangar queen, I think there can be a problem.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
The 91 octane fuels will be fine for your 74. I'd think...thinking of my situation..is that you should be concerned about the alcohol in today's fuels..about 10%. The alcohol absorbs water from the atmosphere, or condensation inside the fuel tank. Water laden fuel from alcohol will rot your pot metal Holley or Quadrajet carburetor and also the interior of the fuel lines and the interior of the fuel tank.
If you're driving the 74 a lot, water build up in the fuel is not a concern. If it's a hangar queen, I think there can be a problem.
If you're driving the 74 a lot, water build up in the fuel is not a concern. If it's a hangar queen, I think there can be a problem.
Safety Car
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
Team Owner
Joined: Jul 2004
Posts: 40,404
Likes: 791
From: Redondo Beach, California
I've replaced the fuel tank, fuel lines, and carburetors on both my 68 and 70. There was significant corrosion. These cars had operated all their life with alcohol free gasoline, it's seems to a calm considered rational thought.....not a sky-is-falling emotion, that water in today's fuels will make things worse.
............
The man (Andy Green) that installed my supercharger told me that his opinion was that Torco was the only effective octane booster he had encountered.
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Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
The message here was that the absence of lead is usually not a problem with today's fuel, the presence of alcohol and water contamination is.
I've replaced the fuel tank, fuel lines, and carburetors on both my 68 and 70. There was significant corrosion. These cars had operated all their life with alcohol free gasoline, it's seems to a calm considered rational thought.....not a sky-is-falling emotion, that water in today's fuels will make things worse.
I've replaced the fuel tank, fuel lines, and carburetors on both my 68 and 70. There was significant corrosion. These cars had operated all their life with alcohol free gasoline, it's seems to a calm considered rational thought.....not a sky-is-falling emotion, that water in today's fuels will make things worse.
I see no corrosion. Using your rational, it seems that pure gas causes problems.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
For whatever reason, I had never noticed that the car additive section was directly opposite from the miracle lures. I started reading the packages and found that there's very little difference between bass lures and fuel additives in terms of promised results.
I came home with some Zmax. Watch out fishies- your days are numbered!
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,594
Likes: 7,042
From: New Or-leens Loo-z-anna
Rookie questions for M.W. :
approx. how many miles a year do you drive your car?
do you try to buy the same brand of gasoline at each fill-up?
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Not many. Maybe an average of a thousand? The gasoline in the pic is over a year old.
Brand name means nothing. I make no conscious effort to patronize one brand over another, other than Costco is the cheapest.
Flame suit on.
Team Owner
Joined: Jun 2000
Posts: 38,923
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From: Southbound
Cruise-In II Veteran
Le Mans Master
Joined: Feb 2011
Posts: 5,943
Likes: 61
From: Southern NH
My '81 fired right up yesterday with it's 6 month old gas in it. I put a couple ounces of GM top engine cleaner in the tank (which isn't necessary, I just have a ton of it in the garage so I figure I'd use some), took it for a ride to burn the rest of the old gas off, and filled it with the cheapest 87 octane I could find.
Team Owner
Joined: Jul 2004
Posts: 40,404
Likes: 791
From: Redondo Beach, California
Just fantastic to hear that your tank is in great condition. Somehow or another, that doesn't make my two fuel tanks corrosion free.