Rote8

I do not have a catalytic convertor on my 8.
Race gas has lead to lube seals (and valves in piston engines)
Has anyone else tried a lead additive or leaded gas in a cat less 8?
Wouldn't the leaded help with Apex seal lubrication?


I have started adding a lead substitute to my gas.
How did the lead substitute effect my engine?
Vacuum at idle went from 18-19 to a solid 20 in Hg.
Mileage seems to be up, in spite of my lead foot.

Am I missing a negative reason?
Ideas?

nycgps

iTrader: (1)

it will help, but thats some really expensive Solution.

I would rather add more Premix to my gas than using that RedLine stuff

mazdaverx7

iTrader: (6)

i agree with the above. lead subsitute is more of an anti knock agent as the lead substitute is more or less tetraethyl lead anyways. my 63 Ford Falcon originally used leaded gas and i now use the lead substitute (about a shot glass full) with every tank fill. the lead substitute cannont be used with catylitic converters as it will quickly clog them..

the omp should work fine for a stock engine. premix and you should be set.

marsredr100

iTrader: (1)

My current 1972 R100 and past 1974 RX4 clearly stated "Leaded Fuel Only" inside the gas cap door. Both came with thermal reactors not catalytic converters. The following statement clearly shows the benefits of leaded fuel in rotary and piston engines as long as there is not catalytic converter.

"Higher octane can help to prevent detonation (‘knocking’ or ‘pinging’), as well as preignition. These two problems are not merely noises heard from the engine, but are symptoms of something going very wrong, and these problems can literally destroy an engine, breaking piston rings (or apex seals in the case of a rotary engine), holing pistons, breaking connecting rods, and otherwise causing major damage.
Tetraethyl lead, in addition to its octane-increasing benefits, also lubricates valve seats and other portions of the engine that are not exposed to crankcase oil. Newer engines have special hardened valve seats that do not require this lubrication. However, running an older engine on unleaded gas can cause damage to the valve seats.
Modern high-compression and highly-tuned engines are more susceptible to detonation, especially on modern lower-octane gasoline. As an engine is leaned out to maximize power output and fuel economy, detonation also becomes more likely.
Tetraethyl lead, though beneficial in several ways to the operation of internal combustion engines, has several drawbacks, notably its toxicity. There are products that can duplicate both the octane-increasing and the lubrication function of tetraethyl lead, and these are being further researched."

However, there is no tetraethyl lead in the currently sold lead substitute additives that I know of and I'm not sure if they provide the same benefits as leaded fuel.

Rote8

I found this, which still contains real lead.

kersh4w

iTrader: (3)

wow, i never knew about lead. i wouldnt use it though.. i cant imagine inhaling lead particulates being good for your health.

nycgps

iTrader: (1)

Lead is a really cheap and effective way to increase the Octane rating. It also helps better than MOST stuff out there to lube. Just think of this. Try to use a pencil and color a sheet of paper. Now feel it with your hand, then feel a clean piece of paper, you will know the different.

but its very deadly to almost everything on earth. so

kersh4w

iTrader: (3)

actually, pencils use graphite, which is another good lube as well. i have a bottle of graphite in the basement that i use for stuck locks.

nycgps

iTrader: (1)

Pencils in China use 100% lead its quite heavy when you compare it to pencils made in the US.

Thats why I always keep them away from my mouth.

daisuke

The reason we moved away from leaded gas in cars was because it was very toxic and pumping tons of it into the air was very bad for everyone. Lead was the anti-detonation additive, we moved to unleaded fuel and had to incorporate a catalytic converter to convert the noxious fumes that came out of the tailpipe to cleaner stuff.

My grandmother in chile had a honda civic that she bought just before they changed over to unleaded fuel down there (much later than the US) and after they stopped selling leaded fuel, we simply filled it up with unleaded fuel and it ran just fine for 8-9 years after that.

You can run it, it's just that it's dirty as all hell, and probably very illegal (of course running catless is already pretty illegal). Other than that I don't see a problem

Avgas (the stuff that piston engine airplanes run on) is still leaded.

Rote8

I suspect some of the seal issues with the 8 would not happen with leaded gas.
That is just my wild *** guess...

I have only used the lead additive twice now, and vacuum is still way up.
It may also be from the colder Fall air, and have nothing to do with lead substitute.

czar

iTrader: (3)

o_O i thought it was bad for the o2 sensors to have leaded gas

Rote8

OK, I have lost my mind.
I have been running a lead substitute called CD2 I found at Walmart for the last 5 or 6 tankfuls.
I did notice my vacuum has slowly improved by about 2 inches of vacuum.
Last night I went to Old Town, I gassed up at the Raceway beside 417 with 93 octane; today I drove all over Orlando, then on my way home I noticed I was at a half a tank of gas.
I filled it up again, only used 7.387 gallons for 200.1 miles; 27 miles per gallon, that can't be right.
I have been driving with no A/C on, because it's cool outside, but 27 Mpg is impossible.
(This could be why vacuum has improved too)
WTF
Does Old Town Gas have no Ethanol?

Maybe someone was stealing my gas and suddenly decided to put gas back last night?
I am confused.

Tomorrow I am taking a drive to the beach, no A/C on, I need to be sure.

czar

iTrader: (3)

big hill o_O, intreasting though