About the 4 wheel penalties at Spa:
I've written it here somewhere before, it all depends which club runs the event. The 6 Hour is run by Spa itself, at least in one of the many disguises. CotC in that case is our beloved (yuk) Mr. Delettre.
He goes on about his asphalt like Mr. Palmer about his grass: STAY OFF.
Usually his punishment is like thus:
first time in practice: fastest lap is gone
second time: the 2 fastest laps are gone
third time: you will start at the back
if for whatever reason you still carry on: oh dear!
first time in the race: +10 seconds
second time: +30 seconds
third time: GO HOME
The no-no spots are: top left of Eau Rouge, Pouhon (double left), Blanchimont, the exit of Busstop and La Source.
The hardest penalties will be given for Eau Rouge and Blanchimont.
But then again he may have a good mood. Now that would be a novelty.