Just received some advice sourced from a well known Morgan dealer, which I understand has come from the factory.
E10 compliant:
All CX vehicles; all metal fuel tanks, rigid steel fuel pipes on trads, rigid plastic fuel pipes on BMW models;
Engines: BMW, S&S, Ford engines manufactured from 1992, Rover V8 manufactured from1996
NON E10 compliant:
Rubber fuel pipes on pre- CX and on M3W, They suggest careful monitoring of such components for deterioration and replace with Viton or Viton-lined rubber, or similar material as necessary.
Engines: 4 cylinder Rover engines and any engine with carbs.
Not quite as comprehensive as I would have liked! I am fairly sure that my plus 4 has some rigid plastic pipes in the fuel tank/ carbon canister area but none of that is mentioned. Think it’s a case of “suck it and see” though personally I shall stick with e5 as long as possible.
