He's using Brad Penn 15-40 on this one to start out on. Like I said above after seeing how much oil comes out the lifters I will never build another one without being tubed. I think the last one I tubed I used 1/2 inch house copper tubing but there's probably something better out there to use. I'm 15 minutes from starting my duster then I can jump back on his if all goes well
I get the tubing from MSC in 6 foot sticks. I also bought the reamer from MSC and I make it so you can almost push the tube in by hand, once it's peened it can't move or come out.
