I was filling 2 drums of e-85 towards the end of the
racing season (still the e-85 blend) to use in the spring
time if I was going out early... around here it would
drop down to e-70 during the winter months... I had
QF set up my dom and it was perfect on idle but I did
jet up 2 jet sizes for the wot... its much more consistent
than the 110 fuel I was burning... in 1.5 years it
payed for itself just in fuel cost... not adding
in the wins
EDIT
I test every time before I buy it... I buy from Meijer
and would ask someone in line for the last little
bit in the nozzle to fill my tester... most were
curious to see what I was doing and would wait for
the answer