I seem to remember the Grob 109A (and possibly early Dimona h36)used
Auto type fluid but then Tost or whoever changed to Aviation fluids
and this happened with G109B. It is confusing and a big clear notice
next to Master would be a good idea. A friend who had G109A in the
old days then had an ASH25E and without looking at manual used Auto
fluid before he realised the Germans had changed to Aviation with the
ASH. .........Ian McPhee Australia