Originally Posted by
aroa
Can do. Made for 80 octane. 95 mogas +additive. Never had a vapour lock problem.
Other folk may have used and had alternative
Life's a beach. Pleased to see it not busted. good one
If one was to peruse the original specifications for the aircraft fitted with a DH Gypsy Major engine, you would find words to the effect: " Use a good grade of motor spirit, well filtered".
This engine long pre-dated the use of "lead" in petrol, and the evolution of "high octane" fuels. "Back in the day", petrol would have been around 60-65 octane. Indeed, the introduction of "leaded" fuel cause all sorts of problems with engines that had brass cylinder heads, they had to be swapped for aluminium heads.
Tootle pip!!