Skip the auto shop - Our mechanics make house calls

Q: A piece of cardboard/paper from the coolant jug was accidentally dropped into the coolant tank.

asked by on

This morning, while refilling the coolant tank, somebody mistook the coolant jug cap for the tank cap and attempted to put it on the tank, and accidentally dropped the cardboard/paper piece from the jug (the one that is peeled off when opening a new jug) into the tank. I was unable to fish it out, and I do not know whether I should take the car in and have the tank drained, or if the piece of debris will dissolve. Please help.

My car has 200000 miles.
My car has an automatic transmission.

Unfortunately, this tiny piece of cardboard will not dissolve in coolant as it is designed to withstand the chemical makeup of the coolant. This can become lodged in areas inside the radiator that will prevent the proper flow of coolant through the passages. I would suggest having an expert from YourMechanic come to your home to properly remove the debris from the radiator at your own convenience.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • A piece of cardboard/paper from the coolant jug was accidentally dropped into the coolant tank.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do you customize the multi-information display?

While some of the information and items shown on your car’s multi-information display must remain the same, there are quite a few that can be customized. Here’s how to do it: Press the menu button located on the steering...

Q: Intermittent overheating

Hey there. This may suggest that the coolant fan relay switch may not be working properly. When you car is moving down the freeway at higher speeds, the engine gets a lot of cooling assistance just simply from the air...

Q: Cracked my oil pan, lost oil, and now wont start. Did i kill it?

If you lost all your oil, I'm afraid that by the time the oil light came on, you had already done some damage. If you continued to drive with an oil pressure warning, you may have wrecked it. Once the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...