Octane Fill Up
Junior Member
Joined: 07-29-07
Posts: 495
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From: Wisconsin
whoa I thought leaded and unleaded had to do with like regular gas and deisl like regular is unleaded and deisl is leaded I never new this I've never EVER checked for that when filling up any of mine or parents/sis car maybe that's why the check engine light comes on constantly in my taurus (they said its the sensor)
I know I am showing my age here, but in the 70's and 80's leaded gas pumps used to be right next to unleaded pumps, then diesel.. and so on....does the leaded variety still have a different sized nozzle on the gas pump?/ In high-school, (in the LATE 80's) my old 1972 Chevelle took leded just fine, thank you
Senior Member
Joined: 01-02-06
Posts: 16,982
Likes: 0
From: SK
If you tune the high octane timing tables for it you can gain some power and MPG, otherwise pointless.
If its got lead in it then ya bad for the cat and O2 sensors as stated above.
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