OK, so I was pretty high when i thought up this thread, but I think I've thought of a pretty good way to test this without the possibility of wasting good BHO. I think what I'll do is bum a cigarette off someone and then rig the filter with a thermocouple which should tell me pretty quick how hot the smoke passing through the filter is. I'll report back. I've smeared oil on the outside before and that works, but dipping a straight pin into it and pushing it in the center of the cig works much better IMO (works even better if you make a little tunnel with the pin first before adding the honey oil). I think what I was trying to do was figure a out a way to not burn up valuable BHO while the cig is burning but not being smoked, and have it not look like a cigarette smeared with oil.
Also, I think a possible explanation for the no lip burns is that if you look at the filter of a smoked cigarette, you can see like 75% of the smoke (and heat) passed through the center of the filter (evidenced by staining) and the 1.5mm or so around the outside is relatively clean the cellulose acetate acting as an insulator.
