Posted by Don in Missouri [97.64.167.2] on Monday, January 12, 2015 at 16:22:02 :
In Reply to: Winter/Summer formulations? posted by Chris Case [108.247.147.130] on Monday, January 12, 2015 at 12:04:55 :
They used to use MTBE as an oxygenate, but was pretty nasty when it leaked out of a tank and poisoned water supplies, so they outlawed it. Conveniently, Ethanol is also a low-cost oxygenate that serves the same purpose without poisoning anybody.