Featuring state-of-the-art editing, this video is still relevant nearly a century later.
The best explanation of a differential is from 1937
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HOT OFF THE PRESS
The importance of testing engine coolant (VIDEO)
Peter Meier discusses the importance of testing coolant and how mechanics can use simple strip testers to keep cooling systems safe.
How to use a refractometer
Dorman trainer Pete Meier turned me on to a handy new tool.
Transfer cases: Married vs. divorced FAQ (VIDEO)
When two transfer cases love each other very much…
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SHOP STUFF
Auto care news and advice you can use.
Tools beyond the basics for DIYers
Step up your repair game with sensible choices.
Dash warning lights: feature or bug?
At what point does an icon completely fail to provide critical information to a motorist?
PSA: Check that cabin air filter
The cabin air filter is arguably the most overlooked filter on the car.
Why sidewall styling is both worthless and wonderful for drivers and tire shops
The appearance of off-road prowess while maintaining on-road comfort is what motorists want. Tire salesmen, take advantage.
Surprise: having snacks and phone chargers in your repair shop’s waiting room makes customers happier
A recent J.D. Power study found that a few simple amenities in your service center’s lobby go a long way toward making your customers want to come back, but few businesses have them.
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SHOP STUFF
Auto care news and advice you can use.
“Can you drive a stick?”
It’s been asked of every new mechanic for more than a century. Does it matter in 2025?
Four not-so-obvious ways grease can come in handy
Lubricant? More like lubri-can. A very cheap staple of most shops, I’ve learned to use it in a few unconventional ways.
Two A/C checks you don’t wanna skip
Failing to perform these two vital service steps could cost time and money—or worse.
Five tips for servicing cartridge-style oil filters
Any of these mistakes can lead to an unwanted oil leak or worse—a blown engine.
How to install a brake cable slack eliminator (VIDEO)
If your parking brake is weak or not working at all, a stretched cable is usually the issue.
VIDEOS
Creative repurposing: Shims have all sorts of uses in an automotive shop
There are applications for shims besides fixing camber and panel gaps.
Don’t let your scanner go unprotected
Faults in the car pay you. Faults in the scanner cost you.
One lesson is harder for more experienced techs to learn than their rookie counterparts (VIDEO)
If you’re an experienced technician, you may feel as though you’ve seen everything, but don’t let your knowledge prevent you from learning more.