Has anyone tried the No Toil air filter oil? Tom, you mentioned in your post that the oil you use is very sticky and a pain to clean. The no toil is non-toxic, biodegradable, and comes with a detergent made specifically for that oil. The oil is thin when applied and becomes "sticky" like the oil you mentioned. Only, I don't think it's as sticky as yours. It is much easier to apply than what you describe (stays fluid longer). It has a red color to it, so it is easy to ensure even application.
The detergent is easy to use also. All you gotta do is put some warm water in a bucket, mix in the specified amount of detergent, submerge the filter, squeeze it while holding it under the water, release you grip and voila! All clean!
I have used this oil on factory filters as well as Uni brand filters on my dirt bikes, quads, 3 wheelers, street bikes, chainsaws, you get the idea. I realize not everyone likes to use this type of system, but I thought I would bring it up since you are already using a similar product.