NASCAR prohibiting teams from greasing bumpers at Talladega

Along with changes to the size of the restrictor-plate and the pressure release valves of Sprint Cup cars there is another change mandated by NASCAR that will affect the racing there next month. In the technical bulletin issued to teams this week outlining the changes at Talladega, there was also a note that "the addition of lubricants to the rear bumper cover will not be permitted." To keep the pushing car from spinning out the lead car in the two-car tandems, teams have used everything from grease, to ointment to cooking spray to keep the bumpers from getting locked up when they meet. Charlotte Observer