These we are used to obtaining regularly or topping off/adding regularly:

1) Oil
2) Gas
3) Windshield washer fluid

We think about this only if the air conditioning isn’t cooling enough:

4) Air conditioner coolant
Used to be called Freon, now is called one of these:

SUVA 410A®
Forane® 410A


These next fluids should be visually checked a few times per year (but typically don’t need any topping off):

5) Coolant (radiator fluid)
6) Power steering fluid
7) Power brake fluid
8) Transmission fluid
9) Differential case fluid (can’t visually check though)

Charles Tadros, M.D.

January 4, 2022

Saint Louis, Missouri

2 thoughts on “CAR FLUIDS…

  1. You were our best doctor. You took time. We are doing okay (only)!!! We hope your present work is truly satisfying.

    1. Hi Mary Ann!
      Thank you for your kind words. Seven months after stopping my internal medicine practice, I realize the parts that I miss (and that I would gladly care for those parts for free) are the Mary Anns of the world. Please say hello to Jim and the family.
      Charles Tadros

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