After a review of the notes I received last year, the number 1 area of interest again was octane and engine knock.
The latest question was about blending octane number. For example, if you blend a 100/130 (commonly referred to as 100LL) fuel with a 90 octane mogas, will a 50/50 mix give you a 95 octane fuel? The answer is possibly, but probably not.
I know that this is kind of a trick question, but the answer can be useful. [Read more…]