Here’s the latest reader question, along with my reply!
Corey asks: This will probably sound dumb and maybe it is but I never change the oil in my car.I check it regularly and top it off. I usually sell/trade-in my cars around 90,000 miles and do far haven’t head any issues and feel I have saved a good bit of money. Thoughts?
It is true that oil doesn’t wear out – that’s why it can be reused after recycling. But the additives do wear out – or rather, they degrade. And contaminants – including small abrasive particles as from carbon/varnish – accrue. These create friction, which enhances and accelerates wear, which will cause the poor engine to wear out much sooner than it otherwise would have.
It is testimony to the engineering of modern vehicles that you’ve been able to get away with putting 90,000 miles on the same oil without something very expensive happening.
But, I’ll admit, you have saved some money.
I just – cuing Mr. T – pity the fools who inherited your vehicles!
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