Can you mix leaded gas and unleaded gas together?
 

<center><img src="http://www.vpracingfuels.com/misc_pails.jpg"></center><p>I have no cats. at the moment and want to make sure that I can mix leaded gas and unleaded gas together?

Edy

doesn't leaded gas also kill your O2 sensors?

My understanding is yes.
 

If you run leaded for too long, you will foul the O2 sensors(?), but it takes a while.

yup... no problem whatsoever

Not immediately.
 

A friend has been running leaded in his dragster Rabbit for a while now, sensors still OK.

I was told that the old school O2 sensors yes, but not so much the new O2 sensors.
 

However i would not recommend to run leaded as a day to day gas, the o2s will die eventually.

Edy

so long as none of the guys on the forum belong to this agency
 

<center><img src="http://www.kdheks.gov/kdsi/images/ARD/LOGO%20-%20EPA%20B&amp;W.jpg"></center><p>

No. It kills your cats.

i thought leaded gas could mess up your injectors too?
 

one of my good buddies(who is a car expert) told me they destroy cats, and could mess up your o2's and your fuel injectors, after i was going to fill up with some 110 leaded at the track but then decided not to.

it just sucks that the highest unleaded octane is like 104 :(

why would you even want to?