Hey guys I was wondering if any of you have any expierience using 100LL (Low Lead) aviation fuel. Before I go any further I'll explain why I am thinking of using this. My motor in my Thunderbird is just over 11:1 compression ratio. It has a somewhat safe tune on it and has always ran well with 91 octane fuel (I put 93 in it when I'm out of town but 91 was it for where I live). Anyways, 91 octane is no longer available here, 90 is all I can get. With the temps being consistantly in the 100's I am concerned about detonation. It has never pinged before but it isnt a DD and I've never driven it on 90 octane. I do have 100LL aviation fuel available to me. I was thinking of running a mix of about 25% 100LL and 75% 90 octane pump gas. I have been doing some research on the 100LL and I did find that it WILL ruin your cats, but mine were removed and tuned out years ago. Some say it MAY caused your 02 sensors to fail prematurely but I couldnt really find out for sure, and the ones who said this was true seemed to be speaking about running 100 % 100LL which I think wouldnt be necessary for me. What do you guys think? Would I be safe running this? I would like the extra insurance against detonation but I dont want to harm something else from the lead. Let me know what you think.