Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Gm 5.7 rebuild › Reply To: Gm 5.7 rebuild October 12, 2020 at 10:07 am #984890 Richard KirshyParticipant You could coat the cylinders with motor oil. But no matter what you use,nothing will last indefinitely. Depending on how long the engine internals will be exposed, you should check on it to ensure no rusting is occurring.