Hi Cessnapete
i think you are being misinformed the fuel going into popham will
be the UL91 being produced by Total this is not 91/96 as produced by Hjelmco
there has been a lot of confusion relating to the 2 types of UL91
at the moment the best way to look at it is if your engine is approved for Mogas 80/87 than you should be ok ,
Total are still in discussion with the engine manufacturers
trying to get the appropriate approvals for the fuel so fingers crossed
a lot more engines will get the nod in the future
Regards Chris