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  Do ya'all add lead to your gas?

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Author Topic:   Do ya'all add lead to your gas?
Ralph Rebandt
Gearhead

Posts: 517
From: Farmington Hills, MI
Registered: Feb 2000

posted 05-30-2002 11:45 PM     Click Here to See the Profile for Ralph Rebandt   Click Here to Email Ralph Rebandt     Edit/Delete Message   Reply w/Quote
Fellas, I am having fun putting around in the stang. Not street legal yet. I took it to get the conv top on today. Hopefully it will be painted next Friday

I was told that unleaded gas can hurt the old engines. Is that true? What can it do? Should I add lead from the auto parts store?

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1968 Convertible No Longer on Blocks- IT RUNS

"If your going through hell, keep going" - Winston Churchill
www.ohcc.net

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70SportsRoof
Gearhead

Posts: 901
From: Orange County, CA
Registered: Dec 2001

posted 05-30-2002 11:55 PM     Click Here to See the Profile for 70SportsRoof   Click Here to Email 70SportsRoof     Edit/Delete Message   Reply w/Quote
Don't worry about adding lead. The only time you'll need to add lead to your gas is if you run the car for extended periods of time hard. Such as flying down the freeway everyday at 65 mph for miles on end, or towing. For around town use, you'll be fine without the lead. All my cars and trucks have non hardened valve seats, with the exception of my '70. All my cars do fine, but that's because I don't run the motors hard. But when it comes time to have the heads done, get hardened valve seats put in.

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Gary-
1970 Mustang Deluxe SportsRoof (daily driver), 1946 Ford pickup, another 1946 Ford pickup, 1947 Ford parts truck, 1957 Ford Fairlane 500 Town Vic

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Harrys'65
Gearhead

Posts: 341
From: Saint Paul, MN
Registered: Sep 99

posted 05-31-2002 08:13 AM     Click Here to See the Profile for Harrys'65   Click Here to Email Harrys'65     Edit/Delete Message   Reply w/Quote
Another option people up here use is Aviation gas. It is supposed to be like old 'regular' leaded gas with a high lead content to prevent vapor lock in airplane engines. (Not jet gas...) I personally have never used it, but other guys in the vintage club here buy it in 5 gallon cans at the local small airport and add it to a regular tank. I think they use about 1/3 AV to in a tank full of unleaded.
Anyone else used this? I only drive on weekends, and short distances so I have never done it.

Harry

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Harry Straub
'65 Mustang Coupe
http://www.harrystraub.com/resto.html

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RICKS
Gearhead

Posts: 355
From: Ocala, FL
Registered: Mar 2001

posted 05-31-2002 08:46 AM     Click Here to See the Profile for RICKS   Click Here to Email RICKS     Edit/Delete Message   Reply w/Quote
If you only drive to shows or on weekends, it would take you 50 years to ever see the slightest sign of valvetrain wear due to running unleaded gas. So it's basically a non-issue/urban-myth kind of thing. I usually mix 5 gallons of 110-octane leaded race fuel to 15 gallons of 93-octane unleaded, but I don't do it for the lead. I do it so that I can get away with running stock timing on my high-compression motors. If the fellas in your vintage club are mixing the AV-gas simply to get lead in their tank, they're pretty much wasting their time and money. Also, know that modern gas uses other types of emollients as a substitute to lead. Not quite as effective as the old leaded gas, but it's not like there's no top-cylinder lube whatsoever.

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rockafellz
Gearhead

Posts: 1426
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 05-31-2002 10:11 AM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Hey Ralph,

With my '66 fastback (rebuilt), I don't add lead. But with my Dad's '66 unrestored coupe, we add about 1-2oz. of redline lead additive with every fill-up. The coupe doesn't get driven very much and drives great. When we bought it last year, it had 100,090 original miles on it. As of now, I believe it has 100,500 miles on it. The previous owner had the carb rebuilt. I don't know if the lead makes a difference or not. The first 200 miles that we drove, we didn't think to use it. We're just using it now for cheap insurance.

Erik

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71RESTO
Gearhead

Posts: 1320
From: Oregon, USA
Registered: Oct 2000

posted 05-31-2002 06:40 PM     Click Here to See the Profile for 71RESTO   Click Here to Email 71RESTO     Edit/Delete Message   Reply w/Quote
Hey Ralph,
Just drive and enjoy your car and don't worry about it. Like Rick said, there are other additives in gas now days to replace the lubricants of lead. I had the heads on both of my cars rebuilt, so went with the hardened seats just to be safe. However on my daughters '66 289 (which is a daily driver) and has never been touched, we use the regular unleaded pump gas, put over 35,000 miles on it (on top of the 105,000 we bought it at) and not had one lick of a problem.

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Duane
71 Fastback (his) under resto (351C-4V C6 auto)
73 Mach 1 (hers) (351CJ 4 speed)
66 289/2V coupe (daughter Ashley's)
89 LX 2.3 convertible (daughter Amanda's)
M & M Member #730

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Harrys'65
Gearhead

Posts: 341
From: Saint Paul, MN
Registered: Sep 99

posted 05-31-2002 07:57 PM     Click Here to See the Profile for Harrys'65   Click Here to Email Harrys'65     Edit/Delete Message   Reply w/Quote
Rick,
I spoke with one of the guys in the club. He uses the AV gas because, like you, he runs stock timing on a high compression engine. He claims all of his cars run better with it.
I might try it to see how my 289 runs with it. I think it costs about $1.90 a gallon, so it isn't too bad.

Harry

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JAAZZY
Gearhead

Posts: 776
From: Bay Area, CA
Registered: Apr 2001

posted 06-01-2002 11:58 AM     Click Here to See the Profile for JAAZZY     Edit/Delete Message   Reply w/Quote
That's barely more than 91 Octane here in California in the Bay Area!

quote:
Originally posted by Harrys'65:
Rick,
I spoke with one of the guys in the club. He uses the AV gas because, like you, he runs stock timing on a high compression engine. He claims all of his cars run better with it.
I might try it to see how my 289 runs with it. I think it costs about $1.90 a gallon, so it isn't too bad.

Harry


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mustangs68
Moderator

Posts: 22182
From: Buckroe Beach Va MCA#39406 M&M #12 Member Mustang Club of Tidewater
Registered: May 99

posted 09-03-2002 08:01 PM     Click Here to See the Profile for mustangs68   Click Here to Email mustangs68     Edit/Delete Message   Reply w/Quote
Before rebuild (orginal heads with 140,000 miles)I didn't add lead additives..as said for around town and weekends your ok but if your rebuild the heads/motor spend the extras money
sam

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