Somewhere on this forum are lots of posts re. Is oil dry lub. Don't remember the rational, but there was one.
Main BSA reason is that oil will foul the track.
As for me, over the past three years, we always used oil, in packs all over the country.
Here is what I do:
Polish nails with DD4H axle polish after sanding with wet sandpaper 2000, 3000, 8000 & 12000, then Brasso mix (85% Brasso, 15 % powder compound used by glass companies to polish mirrors). Then Jig-a-loo.
Wheels; DD4H #1, then Red Rocket
Mount wheels with ONLY 2 drops per wheel B4 entering nail into wheel. Spin and wipe off any excess oil (shouldn't be any w/ only 2 drops) and let everything dry for a couple of days.
Use Clear Teflon fingernail polish on the car's entrance holes.
Carefully put Graphite on DFW outer edge's (both inside and outside) of wheel, 1/4' up, but nowhere near the axle or wheel hole. This is to cut friction on a rail-rider. Same with rear wheels, but not so important if mounted so they never touch the track.
Set drift (steer) to 12 inches over 8 feet. I have no idea for 4 or 6 foot ramps, but remember, the curve between start and finishe, especially between 4 and 8 feet is a significant curve. So don't cut 12 inches in half to 6, that would be too much. Maybe 4".
The hottest pwd area for us was AZ. Even though we won, in Council, 2nd and 3d were within 1/100, with bodies from either Jewkes or DD4H.
And it was obvious, that the dad's were very very savvy PW builders.
Any other readers, I have posted this similar before, and got lots of comments, some anti (some even angry), lots of pro. But in areas where council/District races are seriously heavy, it is obvious that with all the above, we were competitive, but just barely. That's the way the world runs.
With grandkids, I have them do as much work on all this as possible, emphasizing that meticulous care on the smallest details is what is important both in PWD and in life. After they leave Weblos, I have a speech where I liken focus and perseverance on the path to Eagle. At this point, we have 5 Eagle children, and 10 Eagle grandchildren, with two more this summer.