After 25 years of changing my oil on numerous vehicles, one thing has remained constant in the back of my mind. Why, Why, am I changing this oil that appears to look fine? I would constantly think that maybe the oil had “broken” down and didn’t have the correct viscosity anymore, but something never quite set right with me about this, so I decided to do some research on it, and come to find out, even the Car Manufacturers do NOT recommend changing your oil till around 7800 miles! It depends on the vehicle, but some might go as much as 20,000 miles. I found this extremely interesting since I usually change my oil anywhere from 6000 to 12,000 miles on both my 1995 Chevy K1500 with 265,000 miles on it and my 1998 Buick Century with 160,000 mile.
The only reason I was changing my oil was because that is how I was raised, I was always told to save my engine “I must change the oil every 3000!” The problem with that is the people telling me this were either doing the oil change or selling me oil. Why would I waste money and pollute our planet for no reason.
just don’t do it! I feel that the 25 years I have been changing my oil has taught me one thing. Changing your oil is a waste of money, resources, and not good for this big rock we call Earth.
http://www.edmunds.com/car-care/stop-changing-your-oil.html