AC Differential Fluid

Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

Comparing open diff vs limited slip vs locker differentials. Learn how each works, pros and cons, and which is best for your build.

The pros and cons of a welded diff vs open diff, plus what to know before learning how to weld your differential.

Learn the difference between DOT 3 and DOT 4, or DOT 5 and DOT 5.1. Every type of brake fluid has a specific boiling point and water absorbing quality.

A short article explaining the main differences between open and limited slip differentials.

Jeff K. talks about the keeping his cool in his '46 Sedan Delivery, with a little help from insulation and damping material.

Learn how to differentiate long and short water pumps.

Learn the proper steps in upgrading your air cleaner assembly to ensure clean air, allowing your engine to more easily make the power that it should.

In this Tech Tip, John offers up a couple solutions to a customer on the hunt for a coil over kit for his 2-door Model A.

Learn the cost differences between a reusable and disposable air filter for your car with our guide. Learn how to clean a reusable car air filter as well.