Mazda Fluid Services at Johnny's Automotive

Your vehicle runs on about half a dozen fluids, and every one of them has a different job and a different way of wearing out.

Engine oil lubricates moving parts and carries heat and combustion byproducts away. Coolant manages temperature and protects the metal in the cooling system from corrosion. Brake fluid turns your foot pressure into stopping force at the wheels. Transmission fluid lubricates and cools, and in an automatic it is also the hydraulic fluid that makes the shifts happen. Power steering fluid pushes the assist on vehicles that still use it. Differential and transfer case fluids carry gear loads on trucks and all wheel drive vehicles.

They do not wear out at the same rate or for the same reasons. Brake fluid pulls moisture out of the air. Coolant runs out of additive package long before it runs out of color. Transmission fluid cooks when it works hard, towing, hills, stop and go traffic in August. Engine oil takes on fuel and soot. A shop that services all of them on one calendar is guessing.

So we test first. On a service visit our ASE certified techs measure condition on the fluids that can be measured, check level, color, and smell on the rest, and send the digital inspection with photos to your phone so you see what we saw. If a fluid is still doing its job, we say so and we leave it alone. If it is not, we show you why and you decide what happens next.

That is how Brian and Johnny have run it since 2006: put the customer over the money. Work we do is backed by our 36 month, 36,000 mile nationwide warranty.

Transmission fluid and filter service is a bigger job than a fluid check, so we quote it as its own service rather than folding it in. And when you want to know how often something is due, your owner's manual is the authority. We will read it with you.