Originally posted by Annoyed
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Lead was added for 2 reasons, to remove the "annoying" engine knocking on ignition, and to increase the octane rating of the fuel. The fact that removing engine knock increased the life of the valves was not a goal at all, but a nice side effect. In fact, the valves got more life extension from the lack of vibration than any lubricating factor.
But in 1975, the government all but mandated the removal of lead from gasoline, not because it was toxic to young brain development, but rather it was on the altar of environment;
So, they tried to stop it based on direct heath effects, but that failed. In the 70's, the evidence of the worldwide impact of leaded petrol on the environment was so overwhelming, that they had no choice but to look for alternatives.
Catalytic Converters were the best method of meeting emissions standards of the time, but lead would destroy the converters, so it had to go. There was another suitable substance to keep the valves happy, I think it was phosphorus, but the govt. said that was a no-no too. How many otherwise perfectly good cars had their engines destroyed by this?
Who cares.
Now, go forward 25-20 years. Now, in the 1980's and 90's, Oxygenated fuels were the enviro's fuel of choice, and this was mandated. To the detriment of small engines such as marine engines, lawn mowers and other power equipment, which were not designed to handle this.
Even now, Ethanol is being added to our fuel by govt. decree. Guess what folks? A lot of engine fuel system components were made of rubber. And alcohol chemically attacks rubber. Why do you think you find so many lawnmowers and such in junk piles at the end of people's driveways and at garage sales? The fuel systems are shot!
Now, while learning all this, I came across something rather disturbing, several states in the US do not require gas stations to list if they use Ethanol, or only if it is over a certain percentage.
Perhaps this is something you folks might want to look into on getting done at a federal level?
So, within the past 50 years, we've had 3 separate instances of government mandated changes to the fuel supply, all detrimental to vehicles in use at the time at the behest of the enviros.
The idiot occupying the white house today actually had "driving the coal industry out of business" as one of his campaign planks in 2008.
So I'm not so willing to trust that someone might convince some left-leaning political idiot to try to outlaw gasoline.
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