Octane rating
AssessTechniques
A measure of a fuel's resistance to engine knock or premature ignition.
Why it's here
Placed in Assess: 1 article(s) of evidence from 1 source(s), led by regulatory news, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.
Evidence (1)
- 8Hacker News·7/11/2026regulationLeaded gasoline was recognized as poisonous from the start
The article explains how tetraethyl lead (TEL) was added to gasoline in the 1920s to reduce engine knock, despite early warnings that it was highly toxic. It also recounts the later public health backlash, the long regulatory fight to phase out leaded gasoline, and the lasting health effects of lead exposure, especially in children.