Tune-Ups - REQUIRED!

The photo included in my post is to visually stress the importance of routine maintenance. A simple spark plug change with estimated cost of $145.00 would have saved this person an additional $1100.00 on the replacement cost of two damaged catalytic converters.

The owners manual gives a mileage interval to replace a normal wearing part. There's good reason too, the spark plugs pictured here aren't just normally worn, they are actually worn away.

Much more material is gone than what I would expect to find at the correct replacement mileage.

That brown coloring is was un-burned gasoline, money just being tossed blown out the tailpipe as the SUV went down the road.

The CHECK ENGINE or SERVICE ENGINE SOON lamp had been flickering away for hundreds of miles.

BTW.. Why do they call those warning lights, "idiot lights" anyway?