Adrian:
Thanks for the heads up on the sealer. Our track is getting very old and has cracks as well. We've been using grape soda after we hose down the track and it dries. Only, now the asphault is so old that it is really rough in spots and has cracks which we are filling with a rubber based crack repair. We are hoping to reseal it this weekend with a rubber based sealer and let it sit for a couple of days. I'm scared about the possible problems, but I think it will be better in the long run since we can't really afford to reasphault it.