I have read on gun forums that mineral oil isn't a good cleaner because it has an acidic Ph? I didn't know oils even had a Ph. Rem Oil is basically mineral oil from what I understand and lots of people swear by it for cleaning. I've been using my own concoction for cleaning 1/3 Catrol Dexron VII - ATF 1/3 Mineral oil 1/3 Mobil 1 0-W30 motor oil I was using straight ATF and it's an OK cleaner. Rem Oil is basically mineral oil and a lot of people swear by it. A lot of people use Mobil 1 and say it's great, so I combined all three. It works OK. I clean with the Mineral oil / ATF / Mobile 1 concoction, but then I make sure I get it all off. I don't want the mineral oil mix left on the pistol. Then I lube with Mobil 1.