Brake fluid?

does200Member

Now that I am retired I can fiddle with my cars more. Want to change the brake fluid, but how can you determine if someone used regular old school fluid or synthetic? In other words, I think some systems are built with internals to use old school fluid and some for synthetic. I presume old school fluid is the way the majority of our cars are built to take. I usually use the old school Dot 3 in my other cars, but I recall years ago it came in Dot 4. It seems anything Dot 4 and above is synthetic now. Brake system is shown below, pretty standard old school, so I am thinking regular Dot 3 fluid?

ITS WIKD Front Trunk by JanDaMan, on Flickr

1/28/163:23 PM

Original Post

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