September 15, 201412 yr Active Members Fortunately or unfortunately, depending upon your point of view, tetraethyl lead is gone from car gasoline. It is an excellent octane booster and is still (barely) present in aviation fuel, called 100LL. It is planned to be banished from it within the next few years. Too bad. Aviation uses some 0.04% of petroleum products to make our planes go. Literally a drop in the bucket. But, like noise at an airport, aviation makes a highly visible target. Back to the picture. Ethyl certainly pumps up a high performance car engine and those guys can fill my tank any time. Best regards, RA1
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