VW motor's were designed for Pulp.
If I put 95 oc in the HB, it gets higher than normal temps plus sometimes keeps running with mags turned OFF. (summer heat )
Avgas runs the lowest temps, 98 oc works OK when out off Avgas.
" & the British were basically bankrupt after the war. "
Tell that to the starving people up at the north of England, while the Londoners had their parties and banquettes.
All because the Yanks wanted the Last penny from the war loans, to give to Our German enemy.
England really Lost that...