I had a filter literally fall apart in my hands using NoToil. I will say I have used it for years and that is never happened but I was told that the NoToil eats up the glue on the filters. The filter was in pieces just from soaking for a few minutes and grabbing it to ring out. I was shocked!
I do like NoToil but would like to know if it really did cause that to happen. I think not. I think it was a shitty air filter. I dont know what kind it was, it was on the bike when I bought it and had no name on it but it didnt seem in bad shape at all before I washed it.
That NoToil rim grease (or whatever they call it,) for the filter, that stuff is like glue! I DONT like it! It has left a gunky mess around the edge of my filter unit.