Gas stations dispensed both, like current gas and diesel.
You could also buy lead additives, more for an emergency situation than a permit solution.
this post was submitted on 25 May 2024
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We didn't "switch" to unleaded gas in the 1970s. We added unleaded, required gas stations to offer it, and vehicle manufacturers were prohibited from making new cars that required it.
Leaded gas was still being offered at some stations well into the 1990s.
Fuck, Germany introduced unleaded fuel only in 1984 and still offered leaded fuel for a long time.
It was required because of the introduction of catalytic converters, which would get damaged by lead in the fuel.
When I was at Bundeswehr I was in hospital for some time and got some thorough diagnosis. They asked me if I worked with lead in the past (no), so I seem to have at least some lead levels in my body.
(Can't think of a I AM NOT CRAZY pun right now)
Why was Germany so late in adding catalytic converters?
Tbh, I have no idea. The whole of Europe was late to this. The first catalytic conveter cars were sold in 1973 in the US and 1985 in Germany.
Switzerland made them obligatory in 1986, Germany made them obligatory only in 1993 - because that was an EU-wide regulation.
The only thing I can imagine is the big political influence car makers have in Germany, but that's just "what sounds reasonable to me", no proof.
Could it be that gas stations in Europe had no room for another tank? So maybe the governments kept putting it off.
As gas stations have enough room for more expensive "ultimate" versions of fuel, I don't think that's the reason. You can frequently get two kinds of Diesel and three kinds of Gas at the pump.
O. t. o. h..maybe the whole "premium fuel" hype resulted from stations having additional tanks after leaded fuel was phased out.
Leaded gasoline is still around. It's rarely at the pump, though. Cars that need it can add lead by pouring it in with regular gas.
Small aircraft mostly use leaded gasoline (AVGAS100LL), as aircraft regulations change at the pace of continental drift. Most of these aircraft would run fine on an unleaded equivalent, and us GA enthusiasts hope for change in this regard.
To add on to this, some of the older cars have been converted to run on unleaded. I own a 1960 Morris Minor that was converted and it runs sweet.
It was phased out over time with both types being sold as all new cars used unleaded only. Eventually the old cars that used leaded gas aged out and were replaced with new cars.
From 97-2000 I drove a ‘77 GMC truck that was designed for leaded gas which was not available any more. I just used unleaded. No additives or anything. Maybe the fact it was a V8 meant it could stand being a little out of tune, but I never saw any adverse affects.
No knocking?
Who's not there?
25 years ago I don’t trust my memory on that. I don’t remember knocking, but it’s quite possible it already had all the lead built up that it needed to prevent knocks. Or because it was parked on the street I just didn’t care.
You can buy lead fuel additives to drop in your gas tank.
That's what people still do, if they have a car that requires leaded gas.
You can still buy tetraethyllead for classic cars that need it.
That is horrifying
It's pretty uncommon though. Aviation uses far, far more leaded fuel than classic cars.
Yeah, I knew that some planes still use it. I have had a full year or so now of being horrified by that too.
I wonder if we're still going to be selling PFAS 50 years from now too.
Only small prop planes, and not all those.
Almost all commercial aviation are jets or turboprops, using jet fuel. Jet fuel has no lead.
I was under the impression thar's what the mid-grade petrol was for; it had a high-enough octane factor to be non-knocking in engines designed for leaded.
It wasn't in fuel just for it's octane boost. Some early engines that were designed to run on leaded fuel had valve seats made of softer metal and relied on lead's lubricating/sealing properties. When unleaded fuel was used, the valves wouldn't seal as well and the seats would wear prematurely.
In about 1980 they stopped selling it at the last local station and my dad and someone did something to the van to make it run on unleaded. It lasted 10 more years.
You could also convert cars by putting harder valve seats in, not sure if this happened a lot at the time, or whether it's more for classic cars that are worth enough to make sense to do. I don't think the lead was primarily an anti knock additive, more of a valve and bore lubricant
Getting hardened seats isn't really all that expensive either. I took the head off my MG and a shop only charged me about $300 for a full teardown and rebuild of the head, including all the machining and installation of hardened seats. It's way cheaper in the long run than having to add a lead substitute every fill-up
In Ireland they had something called LRP or lead replacement petrol for a good while. Eventually it just fizzled out as people had their old cars converted.
I believe there was an additive you could buy at a parts shop for cars that couldn't be converted.
so, from what I read, some people actually still use leaded gasoline?
In the US the only source of leaded gasoline that I'm aware of is aviation gas. Lots of (all?) older piston-driven airplanes use it.
I looked this up, many do but the new additives are supposed to be good enough to replace it. (For piston planes).
Funny thing, that additive is pretty much just diesel
it's used in small plane aviation.
https://www.faa.gov/newsroom/leaded-aviation-fuel-and-environment
Boats, planes, gopeds, racing cars, farm equipment, old cars.
If you arent going to an actual boat/plane/tractor filling station and you just want to, for example, fuel up your goped, you just get regular unleaded and a lead additive and mix them before putting the fuel in the tank.
Airplanes still use leaded gasoline.
Just to clarify, a few airplanes still use leaded gasoline. The vast majority do not.
Turbine engines (jets) do not burn leaded fuels. Jet fuel is similar to kerosene or diesel fuel, with certain additives to meet aviation needs.
The overwhelming majority of piston powered aircraft use 100LL, which has a relatively tiny amount of lead compared to automotive fuels of the 1970s. The FAA has recently certified 100UL for use in all aircraft, but production does not yet meet demand.
Jet-A has higher energy density and is cheaper than 100LL or 100UL, but can't be used in spark-ignition engines.
Compression-ignition ("diesel") piston engines are coming on the market as new and retrofit kits, allowing the use of Jet-A in general aviation aircraft.
Add lead.
My first car was almost a completely trashed 1970 Buick Skylark, this was in 2002.
It ran on leaded gasoline, so the plan was that id need to fill the unleaded gas into a gas-can, then mix in the lead additive, shake, and then fill its gas tank.
Ended up getting an 89 Caddy Deville that the seller was asking half as much for.
Is that the instructions for adding lead? You can't dump it in first and then the flow from filling up the tank be enough to mix it? Or put it in halfway?
Idk dude.
I had a leaded gas goped whose motor was from a weed Wacker.
My step-dad brought home the gas can of unleaded, then I squirted some of the lead additive in the can, and I'd kinda swish the can around before refueling the goped.
Worked for the 2 months before the goped was stolen.
Didn't end up buying the skylark, so never had my dinosaur juice leadifying skills refined.
I had a 1967 mustang while this was going on in the 1980s. For awhile there was one station selling the leaded gas, then you just took your chances, use the unleaded and maybe an additive if the engine knocked, mine didn't.