I called Champ filters today because I'm thinking about running ST3614 filters on my outdoor power equipment. I bought one for my 2.0 Ecoboost but can't bring myself to use it.. I just feel like it needs a better quality filter. Anyways, I found that almost all of my stuff uses the same gasket diameter and 3/4-16 thread pattern. The only difference is filter height on my machines. I called and asked 1. If the Champ PH2835 and ST3416 are the same and 2. What is the micron rating of the filter. The tech line told me that they are the same filter and that the micron rating is 90% at 20 microns. I thought that was pretty darn good for a $2.97 filter. Any other reason I'm not thinking about not to use on multiple outdoor equipment?