I find taking the laptop to access my Excel spreadsheets for filling up a touch inconvenient as with the slide rule, the finger in the air and I've driven for a while so better fill up resistance method has worked well for the last 10 years.
Bruce 1964 4/4 Series V Comp (Megan) 1994 +8 (Maurice) tis no more 2013 M3W (Olga)
