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Lead Additives?


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8 replies to this topic

#1 DanO OFFLINE  

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Posted July 19, 2011 - 07:53 AM

What Do You Guys All Think About Lead additives used on Pre 1970's engines? I just Changed the Plugs in my 53 Farmall From the original Champions to Autolite because they kept fouling up, & i was told the problem was old Champions were made to run on Leaded gas...Now I'm thinking about all the other vintage engines I have and considering starting to use a Lead additive to all of them. Like your opinions...Yes, No, Don't Matter??? And if so, any brands you would or wouldn't recomend?

#2 brokenfeather OFFLINE  

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Posted October 25, 2011 - 06:35 PM

I would like to see some information on this topic as well. Wonder why there is no comments. I'll be some one has some information. I know I don't. Might just need to do a google search on the subject and see if there is any info floating around out there.

#3 smasher OFFLINE  

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Posted October 25, 2011 - 09:00 PM

Lead increases octane and acts as a cushion/ lubricant for valve seats and valve guides (wonderful stuff) but it doesnt keep you plugs from fouling, infact lead will foul your plugs. More than likely your fouling is coming from oil or a rich fuel/air mix. Also check you ignition a weak spark will give you incomplete combustion and can foul the plugs

#4 olcowhand ONLINE  

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Posted October 25, 2011 - 09:10 PM

Yes, the lead lubed the valves & seats. I've never heard tell anything about it helping spark plugs. On older engines, a lead substitute additive is a good thing to use.

#5 Bolens 1000 ONLINE  

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Posted October 26, 2011 - 05:10 AM

Yes, the lead lubed the valves & seats. I've never heard tell anything about it helping spark plugs. On older engines, a lead substitute additive is a good thing to use.


:ditto:

I usually run leaded gas in all my Bolens/ older equipment.
I have never heard of it fouling the plugs

#6 caseguy OFFLINE  

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Posted October 26, 2011 - 08:11 AM

I haven't used any of the lead substitutes, but I would like to, at least on the older engines that I have. Does anyone use / not use a specific brand for a particular reason?

#7 Billygoat OFFLINE  

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Posted October 26, 2011 - 07:16 PM

I don't know about being a lead substitute but I like using MMO in my smaller engines. I also have a 1980 Sportster that has over 11:1 comp. ratio (my playtoy). I have used MMO and 104+ octane booster in it since 1981. It's going thru it's third "makeover" right now. Have to pretty much rebuild the whole bike except engine. The engine consistently sees a lot more rpm's than the factory recommends and is still pretty tight. I've got about 35,000 miles on it since first (and last) rebuild.

#8 Bolens 1000 ONLINE  

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Posted October 27, 2011 - 05:16 AM

I haven't used any of the lead substitutes, but I would like to, at least on the older engines that I have. Does anyone use / not use a specific brand for a particular reason?


I use "Instead o' lead"
Its been a while since I bought any so I'm not sure if they even make it anymore

#9 mjodrey OFFLINE  

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Posted October 27, 2011 - 05:28 AM

I use I Can't Believe It's Not Lead .:bigrofl::bigrofl:


No,I just joking with you guys.:D:D




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