gel point

Got questions?  We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re offering up some winter performance tips for diesel trucks. S.M. • Ann Arbor, MI Q:  I drive a 2001 Ford F-350 Super Duty Crew Cab pickup with a 7.3L Powerstroke diesel engine and a 4R100 automatic transmission. When