On a hybrid vehicle’s air conditioning system that utilizes a high voltage electrical compressor, can only the oil specified by the vehicle manufacturer be used in the compressor or is PAG oil acceptable for use in an electric vehicle’s compressor?
Recently, I went down an internet rabbit hole about why gasoline once had lead in it and how it got removed. In my searches, I found this video on inventor Thomas Midgley Jr., who not only invented leaded gasoline to combat engine knocking but also synthesized chlorofluorocarbons (CFCs).
Midgley’s work transformed cars and transportation: cars were more reliable, more convenient, and more comfortable as a result of his work. However, in doing so, he also invented a gasoline that was dangerous to both humans and the environment. For better or worse, he raised the bar for what the automobile could be and do.
With CFCs, Midgely made air conditioning and refrigeration more commercially viable and affordable when it was not, improving the quality of life, food safety, and industrial processes for Americans. Again, however, he also invented a chemical that was bad for the environment.
Midgley was not immune to the dangers of his inventions, as he himself suffered from symptoms of lead poisoning and had to take a break to recover.
Check out this video on Midgley and his inventions, which, despite their benefits, have unfortunately also caused damage to human life and the environment.
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You may be surprised at how diesels have made a name for themselves in motorsports.
Giorgetto Giugiaro influenced everything from groundbreaking supercars to beloved city vehicles.
Technician A completed a compression test, noting high readings suggest an exhaust restriction, while Technician B says the test checks volumetric efficiency.
All four cylinders are below specification by about the same amount. After performing a wet compression test, values remained unchanged. What could cause this condition?
Did you know that a modern fuel injection system can fire off multiple sprays in the same time it takes for a spark to jump across a plug?
Technician A and Technician B are discussing ways to use fuel trim as a troubleshooting aid. Technician A says that fuel trims that are correcting for a lean condition at high RPM and load conditions indicates a problem in fuel delivery. Technician B says that this condition is caused by a vacuum leak.
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