I had a lady customer who drove a big Pontiac Bonneville with a 389 engine, two blocks to work, and back home, once a day. It needed a tuneup every 6 months, and she hadn't driven it over a thousand miles each time. I finally started taking it 10 miles up the road at wide open throttle every time it started running bad- - - -60 MPH top end outbound, and 120 on the way back! She wouldn't drive it at highway speed, but she was perfectly happy to let me blow the cobwebs out every few months.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!