What Are the Differences Between AVGAS 100 and AVGAS 100LL? The key difference between both types is the percentage of the included tetraethyl lead additive. AVGAS 100 has high lead content, while AVGAS 100LL (low lead) includes low amounts of tetraethyl lead, as the name refers.

Can I use avgas in my chainsaw?

Switched to AVGAS 100 a year + ago and the lawn mower and chainsaw love it! No more starting problems and they run with full power. Just a few pennies more per gallon and its worth it, by a whole bunch, not to have engine problems.

Can I use avgas in my lawn mower?

Avgas. Other than the price, Avgas is fine for lawn equipment.

Yes, you can mix any of our race fuels. But remember – if your engine needs an unleaded fuel, you don’t want to mix leaded with unleaded. Doing so would make a leaded fuel which could still damage oxygen sensors and catalytic converters.