Michigan PSA – Don’t Put This In Your Washer Fluid Reservoir

Despite all of the snowy weather that Michiganders face, I would typically believe them when it comes to winter advice.

However, after this Reddit thread I stumbled across, I may reconsider.

Have you ever heard of someone using Windex in their car? No! Well, now you have.

Windex & Cars Are A Big No No

Look, Windex works great on your bathroom mirror, but your car is a different story.

Before you do something drastic, here is why it is a big no-no.

It will freeze! Unlike actual washer fluid, Windex does not have the right mix of chemicals to withstand Michigan's frigid temperatures. Most Windex formulas freeze at around 32℉, while washer fluid can handle temperatures as low as 20℉ or colder.

Plus, if Windex gets in your vehicle's system, it can freeze in the hoses, nozzles, and reservoir, leaving your windshield wiper system completely useless when you need it most.

It can damage your car! This seems like a given. Since Windex contains ammonia, it can damage rubber seals and hoses in the washer system over time. What does that mean for you? More expensive repairs and a trip to the mechanic.

It will not clean as well. Unlike a proper windshield washer fluid, Windex is not designed to cut through road grime, salt, and ice. Instead, you will certainly get streaks, residue, and a lot of frustration every time you attempt to clean your windshield.

Even with these warnings, there may be someone you know (or you) that have already made this mistake. Here is what you need to do:

• Do not try to use the sprayers
  • If the Windex is already frozen, forcing the system could burn out the washer pump motor, which is another expensive repair.
• Let it thaw!
  • Move your car into a garage or a heated space. If that is not possible, you can try using a hairdryer or heat gun near the reservoir and hoses to speed things along.
• Flush The System
  • Once the Windex is thawed, drain the reservoir completely and refill it with a winter-grade washer fluid. You may need to run the system a few times to get any remaining residue out.
• See A Mechanic
  • If your nozzles are not working, the frozen fluid might have cracked a line or clogged the system. So, call a mechanic if you do not want the hassle.

When in doubt, stick to washer fluid that is designed for your car and Michigan winters unless you are rich and don't care.

So, let's all agree: Windex stays in the house, and washer fluid stays in the car. Your windshield (and your mechanic) will thank you!