streets Many thanks for info. It makes sense. One of these days I'm going to due a bore on a block myself and use the tank of oil like you suggested. I welded the crack in my flathead and sleeved it. Didn't work so I'm going to have new sleeves put in and have it bored .060. Hopefully as I said this would be my first bore job. Need to ask you a question. On a previous post you mentioned(I think) that you had a replacement knee. I've got to have it done pretty soon and was wondering how the knee felt afterwards?