Castro Valley Union 76
2445 Castro Valley Blvd, Castro Valley, CA 94546 510.581.6700

Engine and Exhaust

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How Cool is That! (Coolant level sensor replacement)

Your vehicle’s engine runs hot.  It should, since it’s a series of little explosions that create the power that gets you going where you want to go.  To keep the engine cool, eng...
Published on: Jul 28, 2024

Cooling System

We’re often asked questions about the cooling system – the system that cools your engine and keeps it at the proper operating temperature.  Let’s examine the topic in two areas:...
Published on: Jun 07, 2023

Heater Core

{{ image('MzU0') }} Castro Valley drivers may wonder where the air in a vehicle's passenger compartment comes from. Well, as your engine starts to warm up, it also warms the coolant/antifre...
Published on: Apr 05, 2023

Heater Core

{{ image('MzU0') }} Castro Valley drivers may wonder where the air in a vehicle's passenger compartment comes from. Well, as your engine starts to warm up, it also warms the coola...
Published on: Jan 30, 2023

Radiator Fans

If you’re old enough, you’ve heard the term “fan belt”. Back in the day the radiator fan in your vehicle was turned by a belt driven by the engine. There are still belt driven ...
Published on: Sep 12, 2022

The Hot Switch (Coolant Vacuum Valve Switch)

When the weather gets cooler, you want the cabin of your vehicle to stay warm.  When you switch on the heat, you may find the air that comes out of the vents just isn't hot.  The problem co...
Published on: May 20, 2022

Simple Answers from Castro Valley Union 76 for Castro Valley: Cooling System

{{ image('MzUx') }} Question:My engine never overheats. Why should I get a cooling system service in Castro Valley?Castro Valley Union 76 Answer:That's a really good question for Castro Valley driver...
Published on: Dec 12, 2021

Radiator Fans

If you’re old enough, you’ve heard the term “fan belt." Back in the day, the radiator fan in your vehicle was turned by a belt driven by the engine. There are still belt driven fans,...
Published on: Oct 31, 2021