Hell Toupee wrote in
:



So why not use the summer blend year-round? The main reason—apart from
the fact that the 1990 law isn't written that way—is that summer-blend
gas doesn't work as well in the winter. Summer blend's low-evaporation
rate makes engines less likely to stall in hot weather but can make
them difficult to start in the cold...


I wonder if that vapor pressure change really matters when most all cars
use multiport fuel injection these days?

Good post,BTW.


--
Jim Yanik
jyanik
at
localnet
dot com