Over the many years I have fooled with firearms I have used everything from 3 in 1 oil to the latest whizbang synthetic. They all worked although in the 3 in 1 days I preferred the Good polarized oil oil from Hoppe's or that came in the cleaning kits of the day. Later I used Breakfree CLP and liked it. I am currently using a small bottle of oil I got from Ed Brown.