One of my friend has previously run his mower on Acetone, without any alterations. (He worked in the Fibreglass trade at the time, & so got it free)
Apparently it gave no problems - though it may have run at slightly lower power, he didn't find it noticable.
I'd cetrain recommend draining the...
I've been involved in trackside testing of control fuels for over ten years.
If the regulations specify a particular fuel is used, then FTIR fingerprinting can readily confirm that the fuel used is the same as the control fuel.
Changes in batches of a particular fuel have been identified by me...