One of our company engineers runs his old Pugot on Jet A1, He puts £5 of normal pump diesel in his tank then tops it up with jet A1, he says it runs just fine but in town it does run hot. He had to do a rad flush first. He also carries a half used bottle of injector cleaner in the glove box in case the boys in blue get sus about the odd smell from the back end. Good luck to him !