Rod 1
Thanks for your reply.
I spoke to three large UK engine o/haul shops ref Continental engine fuel specs, not much help.
According to their manuals the Continental 0-470A reqiured fuel is minimum 80/87!! or if not available, 100LL. Continental do not appear to know about 91/96 yet.
Using common sense, if my engine is approved by STC for UL Mogas in USA and 100LL, then 91/96UL should be fine, being 100LL without the lead.
Technically the 91/96UL is classed as Avgas not mogas, so the various air temp/ max altitude/ O ring saga applied to Mogas do not apply.
I will be first in line at Popham when the 91/96 bowser is installed!!