As a start point I believe a Jeep built in April 1942 has 68 minimum octane on its data plate.
When you ask about manufacturers changing over to high octane engines. I would suggest that all that would have happened was that they altered the ignition timing specs?
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Bluebell
Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
Last edited by Lynn Eades; 21-04-20 at 21:55.
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