How Often Should I Change My Oil?

Q--The first new car I bought was a 1978 Honda Accord. The manual stated that the engine oil should be changed every 7500 miles or a least twice a year. Thinking I would keep the car forever, I changed the oil every 5000 miles, using brand-name multi-grade oil. I drove the Accord well over 100,000 miles.

Every new car I have had since: 1989 Honda Accord (over 100,000), 1999 Toyota Camry (at 90,000 – still going), I have always changed the oil at 5000 miles using normal multi-grade oil. I always felt that the 3000-mile mark became popular with the introduction of fast lube shops. What is your take?

A--My take is that you may pat yourself on the back. I also think that 5000 is probably a good number for many drivers. Engines have gotten tighter; there is less blow-by and less contamination of the oil.

Along with other factors, this is why oil-life monitors are now permitting us to drive 10,000 miles or more before oil changes. One caveat, however: If your driving style fits the “severe” category, change it by the book.