35000 milesI change the oil and filter every 35000 miles my car is 20 years old no problems with the engine!
Nah ill pass mate thanks.No! I top up once a year with about a pint of oil.I have experimented on 2 cars now over the last 25 years. Mondeo and Focus. No engines problems. Modern engines are brilliant ! Try it yourself and get back to me in 25 years time!