Ever hear of an oil related failure? Here's my opinion on oil change interval. I think many spend a lot more than necessary on unneeded maintenance.
Today's engines along with current oil formulations easily tolerate even the worst abuse from extended use of oil. As long as there is sufficient oil in the crankcase you are unlikely to see any type of failure from not changing oil regularly. Nothing wrong with changing oil frequently if you want to spend the money on unnecessary maintenance, but even manufacturers recommendations have greatly increased time / milage. Every 3,000 miles or 6 months has increased to every 7,500 or 1 yr for non synthetic and much longer for synthetic.
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