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Author
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Topic: leaded gas?
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quinn
Journeyman Posts: 19
From:
Registered: Jan 2002
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posted 03-06-2002 01:04 AM
   
i have been mixing the gas in my 69 302 2bbl with lead for the crazy reason that when i bought her, i found lead additive in the trunk. do you guys still mix? i ran a tank with out and she "seemed" to run better. what do you guys think?
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johnmustang
Gearhead Posts: 4088
From: Vancouver Island , British Columbia , Canada
Registered: Nov 2001
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posted 03-06-2002 01:23 AM
You really don,t need it , if you are concerned about ping or pong  , just run a mid or high grade gas. The lead was just used as an anti knock agent , by raising the octane-level of the fuel. It also helped to avoid exhaust valve recession ( sink or seat wear ), but , you don,t have to worry about this with your motor , unless you run it hard for many extended periods of time , and , under a constant load. Don,t waste your money on additives , you don,t need them. If and when, you get your motor re-built , have the hardened valve seats put in , and , you will never have to worry or wonder about it again. These are just my own opinions , so , check with a few of the other members to get other opinions , then make your own informed choice. JOHN  ------------------
65 2+2 FASTBACK
68 COUPE
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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Fastback68
Gearhead Posts: 1564
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 03-06-2002 02:43 AM
For the US, I believe John is right. It depends on the gas available. Where are you from quinn? In the UK the story is a little different ... we have some oddball gas there now, and the hardened seat valves are strongly recommended! In the Philippines, the premium gas is supposed to be non-leaded from last year, but my "inside sources" tell me the gas companies just changed the stickers on the pumps and are still selling leaded 
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SuperDave
Gearhead Posts: 123
From: Tacoma, WA USA
Registered: Jun 2000
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posted 03-06-2002 03:29 AM
ditto Johnmustang
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70SportsRoof
Gearhead Posts: 611
From: Just west of Phoenix, AZ
Registered: Dec 2001
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posted 03-06-2002 03:34 AM
I've been dealing with the lead-nonlead thing for awhile. As you notice in my signature most of the cars I have used leaded gas when new. Lead was used as a lubrication for the valve seats and to act as a bit of a cushion. The only way it may become a problem if you have non-hardened valve seats is if you continously run your car at high rpm's for extended periods of time. That is when it can become an issue. I've never used lead substitutes in my cars since they are just used for around town driving. Unless you are jamming down the freeway at 75mph for 2 hours a day, then it won't be a prob. Don't worry about it until you need the heads rebuilt. ------------------
1970 Deluxe SportsRoof (63B),'66 fastback 289-4 spd(going to a new home),(2)46 Ford trucks, 47 Ford truck, 57 Ford Fairlane 500 4dr, '72 Olds Vista Cruiser(up for sale soon), '88 Bronco II(for sale)...running out of room, selling some of my projects
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beachbum
Gearhead Posts: 142
From: Florida
Registered: Oct 2001
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posted 03-06-2002 11:56 AM
Have wondered about that myself but back before most fuel became unleaded they had Amoco white gas. It was supposed to be the best gas available back then, it was unleaded and I never heard of a problem with valves from that gas.
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quinn
Journeyman Posts: 19
From:
Registered: Jan 2002
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posted 03-06-2002 02:36 PM
aaaahhhh. i get it =) that explains alot.
i am from georgia by the way. i wonder if adding the lead could have anything to do with my erratic carb function? sometimes the exhaust is crystal clear, sometimes really rich and smelly, and thick..hmmmmmm. thanks fellas!
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68 S-code GT
Gearhead Posts: 993
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 03-07-2002 09:12 AM
I?ve noticed that my FB gets better mileage and runs a little smoother and cleaner with 104 octane ?Real Lead?, but I do not use it all the time$$$$$$------------------
68 S-code FB GT 4spd(now C6)/3.25 PS PDB
68 J-code(now 289) Cp Sprint"B" C4/3L00-9" PDB PS AC
99 F150 XLT Ext/cab, 4X4, 5.4L, 3L55
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johnmustang
Gearhead Posts: 4088
From: Vancouver Island , British Columbia , Canada
Registered: Nov 2001
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posted 03-07-2002 09:15 AM
quote:
Originally posted by 68 S-code GT:
I?ve noticed that my FB gets better mileage and runs a little smoother and cleaner with 104 octane ?Real Lead?, but I do not use it all the time$$$$$$
cheaper in the long run to just buy high grade gas. JOHN ------------------
65 2+2 FASTBACK
68 COUPE
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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