I searched the forums and apparently the fram ph8170 is an alternative but I can't find it near me. The PH3614 is readily available as is the super tech st3614. I bought the PH3614 but haven't yet installed it. Is that ok to use for a John Deere D105 mower? Should I get something else? Is the super tech bad? I see from cursory research that you all dislike fram haha. Thank you!