I didn't want to barge in the oil discussion below, but did find it interesting. I've used Pennzoil for maybe 60 years with no known problem.
My question: I have a 2011 Buick Lucern that will tell me what percentage of oil life I have left. Is it safe to trust it and let it run down to say 5% before I change? I've always changed oil according to the odometer at around 3,000 miles.
My question: I have a 2011 Buick Lucern that will tell me what percentage of oil life I have left. Is it safe to trust it and let it run down to say 5% before I change? I've always changed oil according to the odometer at around 3,000 miles.