Lemmy explains why this basic task always comes before removing the positive cable to help you understand the theory behind the practice.

Why build what you can buy inexpensively?
Think you know how to pour oil out of a jug? Are you sure about that? Lemmy and Nick talk about the best oil pour techniques to avoid making a mess.
Can independent repair shops benefit by offering mobile service to an increasingly immobile America?
Auto care news and advice you can use.
Ever spot what appears to be a second oil filter under a vehicle? Lemmy and Nick discuss the advantages of spin-on transmission filters for fluid protection and service.
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?
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.
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.
Learn about a shop that’s making Jeeps all they can be.
There are many types of punches. There’s a reason for that.
A helpful video investigation of proper (and improper) torque wrench techniques and habits.
It’s much more than just Christine.
Just when you thought The Golden Rule was out of style, this independent repair shop and used car sales center proves otherwise.
Ready to grow your shop’s business with fleet maintenance, service and repairs?
There are many types of punches. There’s a reason for that.
A helpful video investigation of proper (and improper) torque wrench techniques and habits.