I have had different oil's and pretty much have settled on synthetic oil that I use in my F150. I figure if it's good for pistons going up and down at lightening speed it will work for a slide moving back and forth at much slower speed. The left over in the bottom of a gallon jug will last for yrs.A little dab will go a long way. And Rem oil is just mineral oil. Why it's so much in the store is crazy.