2006-09-12 05:45:56 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
when
when
when
when
2006-09-12 05:49:44 · update #1
Not why.
Not if.
When.
2006-09-12 05:51:46 · update #2
Not relativistic.
Chronological.
2006-09-12 05:52:32 · update #3
I know that I could still purchase leaded gasoline when I started driving and it stopped at pretty much the same time, so I would guess it was somewhere around 1989 or 1990.
2006-09-12 14:55:23 · answer #1 · answered by Mee 4 · 1⤊ 0⤋
It was a series of gradual reductions. In America, the process of reducing lead started in 1975, and ended in 1986, except for a few special uses. All on road use ended in 1996. Some off road use is still permitted, but many racing organizations have banned lead, too.
Other countries had or have different timelines.
2006-09-12 13:07:58 · answer #2 · answered by Bob 7 · 2⤊ 0⤋
Phase out of the additive tetraethyl lead began in 1976, and was completed in 1986 for automotive gasoline in the U.S. It was still in use in Europe until 2000, and was finally dropped in China in 2001.
It is still in use for some aviation fuels.
2006-09-12 13:10:32 · answer #3 · answered by Dave_Stark 7 · 0⤊ 1⤋
In what year did unleaded fuel become a requirement for all new vehicles?
Answer: Unleaded fuel was brought about in 1974 to prevent the adverse environmental effects of burning gasoline containing tetraethyl lead, an inexpensive octane booster.
2006-09-12 12:55:29 · answer #4 · answered by Anonymous · 2⤊ 1⤋
They put catalytic converters on cars in 75 so it must of been completely phased out by then. Lead will ruin a cat.
2006-09-12 15:12:02 · answer #5 · answered by isx650 2 · 0⤊ 1⤋
in the mid 1980's
2006-09-12 12:55:59 · answer #6 · answered by Anonymous · 1⤊ 0⤋
Off the top of my head, 1981 or thereabouts.
2006-09-12 15:51:07 · answer #7 · answered by Anonymous · 1⤊ 0⤋
mid 70's
2006-09-12 12:56:50 · answer #8 · answered by ezachowski 6 · 1⤊ 0⤋
So they could charge us more for NOT putting something in. Lead is an additive.
2006-09-12 12:47:15 · answer #9 · answered by Anonymous · 0⤊ 1⤋
When legislation preventing lead additives was enforced.
2006-09-12 12:55:16 · answer #10 · answered by ag_iitkgp 7 · 0⤊ 1⤋