3 In one oil. When I was seven years old, 70 years ago, I had my first .22 rifle. I shot it every day and cleaned it every night and used 3 in one oil. I don't know if that is considered a gun cleaning procuct, but in 1945, that was all I had. It did the job and I still have the gun and still shoot it. I love the smell of 3 in one oil and it always reminds me of when I was 7 years old in 1945 and my first .22 rifle. Joe