What are you using ?

I use what ever it takes to get good oil pressure. For example, right now my car has Royal Purple 10-40 with a HP1 filter. This gets me ~25#'s at idle and ~70#'s at WOT. I have tired a few different combos of oil and filters, but this is what worked on my car. I have also used 15-40 diesel oil too, but I wanted to see if the Royal Purple would do anything for the ET's....and it ran about the same.

Side note: You will probably have oil running down the back of your motor after a few hard launches at the track with that breather on the back of the valve cover.