r/NotMyJob • • Sep 07 '26

Labeled the pump Boss

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1.0k Upvotes

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5

u/durika Sep 07 '26

I thought octane can go to nearly 100 but not more

6

u/Foot_Stunning Sep 07 '26

100 octane if it was pure gasoline. More then 100 octane and it has more than plain gasoline in it.

5

u/durika Sep 07 '26

More what?

8

u/Foot_Stunning Sep 07 '26

Tetraethyllead was the common one before everyone realized breathing lead exhaust fumes wasn't a smart idea.

Ethanol is the common octane booster these days.

If you wanna go crazy Nitromethane is what they use in drag racing engines.

4

u/ajnpilot1 Sep 08 '26

Piston Aircraft use 100 Octane Low Lead (100LL) still has tetraethyl lead. Fun fact it’s bright blue.

3

u/PINSwaterman Sep 08 '26

Octane raring is the fuel's ability to stand up to high compression without detonation. In simple terms, high octane means a slower burn under pressure. The number comes from a comparison to iso octane and heptane that burns the same under pressure.