Ode to the full service gas station

[classicman]

Originally Posted by tw

Where are these supporting facts?

Here are five for you Tom - There are a few THOUSAND MORE.
If you care to, look them up yourself.

Don't Let Alignment Problems Get Your Truck Down

DRIVER ENERGY EFFICIENCY TIPS

Automotive Vehicle Safety

Tire Care and Maintenance

Information Bulletin - Spring Driving

Originally Posted by tw

Meanwhile, when the mechanic says the check engine light mean nothing, then find a mechanic with basic technical knowledge. Another lesson that others may learn from experience. Not just that the failure happened - but also why.

You missed the point here. The point was if a driver didn't notice the light bulb or LED was NOT operational, had burned out/broken.... for whatever reason. There would be no notification of a problem that needs to be addressed.