Bulldog Info
There are a number of ADs (see DHSL)web site for info, but none of them are particularly onerous and not exceptional for an aircraft with over 35 years service. The engine is a 200 hp Lycoming 360 with VP prop therefore more expensive to maintain than fixed prop. In normal operations I would say an average 45 litres per hour is more normal although on a low speed cruise you might get this down to 38 lph.
A&C appears not to have any experience of operating a Bulldog but his view is relevant if the intention was to use the aircraft for intensive aerobatics like Ultimate High. However, in normal use/IMC/Cross Country/non aerobatic training the evidence is that with a fatigue meter aircraft are averaging some 300 hours per FI. My group has operated a Bulldog in Civilian use for nearly 20 years and I have been in the group for 10 years and now manage the aircraft. If you want any further info just ask.