Dear Rollaround and mid-60s Buick caregivers,
Interesting read, discusses today's fuels in older carbureted engines. Helps one understand some of today's tuning and drive-ability issues.
http://www.enginebuildermag.com/2013/11/impact-of-todays-fuels-n-carbureted-engines/
Thanks for sharing the link. I was aware of some of the problems mentioned but not all of them. I wasn't aware of the effect of old premium for example. This is an item I'll have to deal with soon in the case of my trusty wagon. Definitely a good read for anyone with a classic.
Cheers, Edouard