Originally Posted by
PhillipM
At around 200,000 miles, I decided to heck with frequent oil changes. Money saved on that is best put to a new engine or vehicle. Now I have 319,000 miles on it and have never been inside the engine, 1999 F150 5.4L. If it blows up tomorrow, I can't fault it.
The key is to get the oil hot by driving more than 10 miles in a trip. That boils off the crankcase condensation from shutdown that mixes with the oil making acids. I just top it off.
Ya pays your money and takes your chances!