A brake service job isn’t complete unless the reservoir cap’s diaphragm has been pushed back into place. This simple step is easy to forget, but it helps to reduce brake fluid contamination and ensure proper system function.

Lemmy explains why this basic task always comes before removing the positive cable to help you understand the theory behind the practice.
Resistance is futile.
Stop beating your sockets to death.
Auto care news and advice you can use.
71 years of success started at the end of the road.
Step up your repair game with sensible choices.
You can’t sell what you don’t understand.
A fluid transfer pump is the cleanest and easiest way to fill a differential, transmission or transfer case with its necessary fluid.
Formal education teaches you theory and the real world teaches you the rest.
Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle. With interesting stories from around the world, features on creative people and solutions, and all kinds of other stuff that’ll make you use your mind and your hands.
Auto care news and advice you can use.
Lighten the mood at the next cocktail party you attend.
It’s been asked of every new mechanic for more than a century. Does it matter in 2025?
Want to make your vehicle last? Not sure how to talk to a shop about car repairs? Nick and Lemmy offer their five top recommendations.
Once the most basic of circuits, the humble lamp has also progressed.
Ready to grow your shop’s business with fleet maintenance, service and repairs?
Formal education teaches you theory and the real world teaches you the rest.
The right tools will expand your capabilities and help you to tackle more advanced jobs, but it’s not always easy to know where to start.
It’s been asked of every new mechanic for more than a century. Does it matter in 2025?