Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Yukon 5.7 distributor cap rotor corroded every 2000 miles › Reply To: Yukon 5.7 distributor cap rotor corroded every 2000 miles February 4, 2021 at 3:43 pm #988643 Richard KirshyParticipant Might try applying some dielectric grease to each tip inside the cap. You may still get build up, but it is easily removed.