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Old 04-28-2016, 02:45 PM
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Casper001
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Default Lead substitute

I was always told since they stopped selling lead gasoline at the gas stations, to add a bottle of lead substitute whenever filling up the tank.

With today's gas, I know it doesn't have lead but do you still need to add the bottle of lead substitute?


TIA.
Old 04-28-2016, 02:51 PM
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Bluestripe67
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At a 115K miles on my rebuilt SB I have never used any such additive, nor have I been told it's the thing to do. No need for it! Dennis
Old 04-28-2016, 02:51 PM
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tuxnharley
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Originally Posted by Casper001
I was always told since they stopped selling lead gasoline at the gas stations, to add a bottle of lead substitute whenever filling up the tank.

With today's gas, I know it doesn't have lead but do you still need to add the bottle of lead substitute?


TIA.
Probably not, depending on how you drive the car. If it's mostly just cruising, around town, etc at low load and moderate rpms, no need.

If you're constantly on it hard, high engine loading, high rpms, it might be cheap insurance - maybe just for peace of mind.

Most studies have shown that it isn't really needed.

Tetraeythl lead was originally introduced as an octane booster when compression ratios in engines were increased. The issue of valve wear was secondary. Today's gasolines get there octane rating from the refining techniques.

Old 04-28-2016, 03:02 PM
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Powershift
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You can also buy real tetraethyl lead instead of the substitute. It just isn't legal for use on the road. But many folks do use it.

Not needed for typical use in these cars, but it does work. Available from many sources, this is just one. Google the name for other suppliers.

http://www.ebay.com/itm/Octane-Supre...9UucLQ&vxp=mtr

Larry

Last edited by Powershift; 04-28-2016 at 03:05 PM.
Old 04-28-2016, 03:08 PM
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Frankie the Fink
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You don't need any fuel additive. If you're worried about it then send me the money you would have spent on the additive and I will send you a weekly email stating, "...Everything is OK!".

The results will be the same only I'll be a little richer.
Old 04-28-2016, 03:13 PM
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GTOguy
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With unhardened valve seats, lead additive/substitute will help if you A. pull a trailer, or B. spend most of your time at 4000 rpm or greater. I use TEL130 in my '65 GTO for octane boost, not for valve seats. For normally driven old cars, no gas additive is really needed to protect the valve seats.
Old 04-28-2016, 04:07 PM
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Mr D.
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Short answer --- NO
Old 04-28-2016, 05:30 PM
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65hihp
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Where's MikeM?
Old 04-28-2016, 05:32 PM
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ByByeAmericanPie
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You can get real TEL here: http://www.wildbillscorvette.com/OctaneSupreme01.htm
Old 04-28-2016, 05:49 PM
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MikeM
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Originally Posted by 65hihp
Where's MikeM?
Why do you ask? It's already been said, hasn't it?
Old 04-28-2016, 06:16 PM
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Donny Brass
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I throw a bottle of this in every fillup




A well dress gentleman with a handlebar mustache says it works like magic.......
Old 04-28-2016, 06:22 PM
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tuxnharley
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Originally Posted by Donny Brass
I throw a bottle of this in every fillup




A well dress gentleman with a handlebar mustache says it works like magic.......
Probably cures arthritis, gout, consumption, and pleuresy too!
Old 04-28-2016, 07:43 PM
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DansYellow66
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Originally Posted by GTOguy
With unhardened valve seats, lead additive/substitute will help if you A. pull a trailer, or B. spend most of your time at 4000 rpm or greater. I use TEL130 in my '65 GTO for octane boost, not for valve seats. For normally driven old cars, no gas additive is really needed to protect the valve seats.
Same here in a couple old vehicles. Supreme 130 is the only effective octane booster I know of - short of mixing in race fuel or aviation fuel. But I use it for octane and not for the lead content.
Old 04-29-2016, 07:22 AM
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capevettes
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No
Old 04-29-2016, 08:46 AM
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rfn026
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Most of the gasoline additives are snake oil. Maybe.

There is almost no decent research on any of these additive. All of the evidence is anecdotal.

Technically you can't even say they're all worthless because that evidence is lacking as well

My latest article on gasoline.



Richard Newton

Last edited by rfn026; 04-29-2016 at 08:49 AM.
Old 04-29-2016, 08:49 AM
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Frankie the Fink
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Originally Posted by rfn026

Technically you can't even say they're all worthless because that evidence is lacking as well


Richard Newton
Of course you can, as you will be "worth less" after paying for something with no discernible benefit...
Old 04-29-2016, 06:50 PM
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wsaugenstein
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Due to my '65 fuelie's high compression, I use 100LL airplane gas for the octane, although the lead can't hurt. The downside: $5.00+/gallon, but my baby deserves it. It also stores well for a long time. My car sometimes pings on the current high test gas, and it's well known that it doesn't store well due to absorption of water. When I have to use it, I add Wild Bill's Octane Supreme 130.
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Old 04-29-2016, 08:04 PM
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bluzrocker
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Default snake oil

can also correct uneven tire wear..

Originally Posted by tuxnharley
Probably cures arthritis, gout, consumption, and pleuresy too!
Old 04-30-2016, 01:13 PM
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jim lockwood
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Originally Posted by tuxnharley
Probably cures arthritis, gout, consumption, and pleuresy too!
And available from Dr. Isreal Good as well as other fine, equally reputable retailers.

See the sign next to Dr. Good for a list of other benefits:

Old 04-30-2016, 04:06 PM
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Kind of reminds me of Brighto. The 3 stooges used that for everything


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