[Ford Man]

My '88 Ford Escort engine has lasted 517,9xx miles with regular oil changes and it's still running, I see no reason to change my current habits. When you've ran an engine this number of miles without any rebuilds on no oil changes let me know.

I have about 25 cases of oil on hand I bought for under $1. a quart and about 60 oil filers I bought on sale for $1. each or less so my oil changes cost me about $5. each. Pretty cheap insurance compared to a $3K-$5K engine replacement. At 5K mile oil changes my oil changes for 100K miles cost me about $100. and about 10 hours of my time, definitely not worth taking risks.

A few years ago I changed the oil in my father in laws truck after he had neglected changing the oil for about 10K miles/2 years. When I drained the oil there were chunks of grit/sludge coming out of the oil pan.