The debate on oil changes reminds me of when I was a young lad in the 70’s working in a full service station. We had a customer named Thirston who was a traveling salesman. He always bought a new Ford Thunderbird every three years after putting around 90,000 miles on it and he NEVER changed the oil! We would always check the oil when he filled up and the oil was black as coal after 10,000 miles. At 20,000 miles, the car started burning oil. We begged him to let us do an oil change but he just told us to top it off with the cheapest oil we had which was a 30wt non detergent oil. He said oil changes were a waste of money since he was trading it in down the road. Finally, when he was ready to trade it in, we did the only oil change the car had ever had in 88,000 miles. It was like sludge. He had us power wash the engine and detail it. The car did look brand new and he got a decent trade in. I’m sure when the next owner bought the car and saw the detailed engine bay and clean oil, he thought someone must have maintained it well. Just like Forrest Gump said, “you never know what you’ll get”. I always change my oil more often than I need to and I always think of that cheap bastard Thirston when I do so.