I have a gas problem???
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New User
Joined: Jan 2007
Posts: 9
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I have a gas problem???
Which type of gas do I use, or what additive??? The motor in my 66 as far as I know is the original motor which should take Regular gas right?? I have been running unleaded since I completely forgot about leaded gas. The truck itself seams to run fine so I don't know. Any ideas??? Do you think it's fine to run UL gas in it, or if it is not running badly then maybe the motor is no the original???
John
John
Last edited by IB Tim; Apr 23, 2007 at 07:49 PM.
Cargo Master
Joined: Feb 2004
Posts: 2,055
Likes: 167
From: Central Texas
Your valves need the lead to help cool and lubricate them. Without the lead they will eventually erode far enough into the valve seat that you will have performance issues. You should be using some type of lead additive, allthough I am not familiar with them. The long term fix is to pull the heads and have hardened valve seats installed. Not an inexpensive solution, but it is necessary if you run it much. After that it's just a matter of pulling in and filling up with your favorite brand.
Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
First and formost, welcome to FTE.
Have you had the truck for long, or know it's history? Just seems over all these years, with the engine running fine, I would not be surprised if the engine, or at least the heads, have not been gone thru by now. If not, then as prostock noted, additive or hardened seats. Could liven the discussion up a little by getting into type oil to use on these vintage engines. Oil additives are, or have been removed as a result of the modern engine. one issue at a time,
Again, welcome.
dave
Have you had the truck for long, or know it's history? Just seems over all these years, with the engine running fine, I would not be surprised if the engine, or at least the heads, have not been gone thru by now. If not, then as prostock noted, additive or hardened seats. Could liven the discussion up a little by getting into type oil to use on these vintage engines. Oil additives are, or have been removed as a result of the modern engine. one issue at a time,
Again, welcome. dave
Last edited by daveengelson; Apr 4, 2007 at 05:10 PM.
Tuned
Joined: Feb 2005
Posts: 283
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From: Monroe NJ
I don't think you need to do anything or add anything as long as you don't run it hard. I don't have any problems at all with my valves, maybe if you are planning on putting a lot of miles then add a lead additive or have the seats done. Tom
Senior User
Joined: May 2006
Posts: 436
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From: Superior, CO
[NOTE: stupid questions upcoming]
Is there anywhere in the country where people still buy leaded gas?
Or does everyone simply used unleaded (if so, which octane?) and then add some kind of lead additive in every tank?
Thanks,
Jason
Is there anywhere in the country where people still buy leaded gas?
Or does everyone simply used unleaded (if so, which octane?) and then add some kind of lead additive in every tank?
Thanks,
Jason
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
If you're going to putt around the ranch that's one thing, but any kind of RPMs or highway type speeds means that leaded fuel must be used. Additives work but are expensive and really need to be used doubled up. The cost will pretty quickly exceed getting the heads fitted for hardened valve-seats.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
You can still buy leaded gas near a race track or at a race track. It can only be put in a fuel container and not in a vehicle, and will cost between $5-8.00 per gallon. Prices could vary in your neighborhood. 
John
John
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Senior User
Joined: May 2006
Posts: 436
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From: Superior, CO
Thanks Jon,
So I guess that means people either mainly run unleaded and/or have some work done on the engine? Can using lead additives stave off the inevitable?
So I guess that means people either mainly run unleaded and/or have some work done on the engine? Can using lead additives stave off the inevitable?
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Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Yes, but I recall a study that indicated the additives ideally be used at several times their recommended strength to be effective, and used at every fillup. Figure additional $10 or so per tank? Wouldn't take long to add up. The valve seat erosion occurs very rapidly at highway speeds but otherwise I wouldn't worry about it too much. I use my truck a lot so I had the heads worked at rebuild. It's not that expensive.
Elder User
Joined: May 2005
Posts: 581
Likes: 1
From: Montana
FWIW- I recommend using the additive. lead substitute. i ruined a 300 6 cylindar and a 352 engine. both ended up with serious valve problems. i 'm not saying that not using the subtitute is what did it, all i'm saying is i started useing on my other three engines and they are still running strong. my 2cents on that.also i buy the additive at a farm related oil business . comes in a quart bottle with a metering spout. one quart will do 200 gallons of gas at about 15 bucks . most parts houses sell the additives for one fillup at about 5 bucks a pop. Dutch
Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Originally Posted by jowilker
Ted, You could be over reacting to a concern that isn't there.
"Wait until there's a problem", however, isn't in my vocabulary you're right about that.