Curious if using avgas 100LL would be good, bad or ugly in my F-Type S? Benefits? Risks? Waste of $? Thoughts?

Please be nice if this is the stupidest question of the week… lol.

 

Your cat converters wouldn't like the lead content.

Cheers
DD

 

yeah… Thought that might be an issue…

 

Generally on a car tuned to run the 100LL you assume the cats have been removed.

As a default, increasing the octane will not gain anything unless you are octane limited. You'd be better served by mixing some E85 in there, it's effectively about 105 octane, a slight blend to bring your tank to E25-30 is a similar boost in octane but often won't push the car lean enough to cause issues.

Are you just doing it for fun or is there a goal here?

 

We can get 101 un-leaded ($9.50 per gallon). But like said above, unless you're octane limited it won't make any diffrence.

 

In addition to the cats, the O2 sensors also dislike leaded fuel.

If the goal is knock protection, 100 octane unleaded is available.