Quote:
Originally Posted by gaupe75
C3 and B4 is the fuel type, C3 is 100 oktan and B4 is 87 oktan. B4 was more often marked with 87, instead of B4.
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Respectfully, I disagree with you slightly: C3 is usually given as 96 Octane. Additionally, for Michael/Knusel's interest J2 octane triangle denotes Kerosene for Me262 jet engines.