HomeAll RepliesReply To: Repeated Engines Failing Reply To: Repeated Engines Failing Sponsored October 17, 2021 at 6:26 pm #675951 Z15Participant What kind of oil are you using? Viscosity that is called for, 5W-30 or something else. Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored