Here is where it gets a little silly. Coolant comes in bright colors: green, pink, orange, blue, yellow. It looks like a unicorn’s juice box under the hood.
Do not just grab the green stuff because it’s cheaper. Your car might need the pink kind, or the blue kind. Check your owner’s manual or ask the nice person at the auto parts store. Using the wrong color is like putting orange juice in a coffee cup—it might hold the liquid, but it won’t taste right.
Getting your car cooling system ready for winter
Mixing the wrong types can turn your cooling system into a thick, sludge-like mess. It creates a goo that can clog up the tiny passages inside your engine, and that is a very expensive headache.
When to Say Goodbye (and Flush It Out)
Coolant doesn’t last forever. It gets tired, just like we do after a long week. Over time, the additives that protect against rust break down, leaving your engine vulnerable.
Most mechanics recommend a full coolant flush every 30,000 miles or every 2 to 5 years. It’s a good idea to check your car’s manual for the specific schedule. Think of it as a spa day for your engine.
If the fluid in the reservoir looks rusty, muddy, or has little floating bits in it, you have waited too long. It should look like a clean, bright beverage, not swamp water. That dirty fluid is silently eating away at your heater core and radiator.
