Science What is the difference between 100LL and car gas? Asked by Dr. John Carmen 12 years ago 1/20/2013 3:55 AM Last updated by anonymous 12 years ago 1/21/2013 3:36 PM
The 100 means 'octane rating' and the LL means low lead. 100LL is a higher octane and containes lead as compared to gas. Car gas has no lead (or much less).
