# Brake Fluid **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** mercedes-benz\ **Created:** [December 14, 2009, 7:06pm UTC](https://community.cartalk.com/t/brake-fluid/40762 "2009-12-14T19:06:43Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![66benz](https://avatars.discourse-cdn.com/v4/letter/6/ebca7d/32.png) [@66benz](https://community.cartalk.com/u/66benz)\ **Post date:** [December 14, 2009, 7:06pm UTC](https://community.cartalk.com/t/brake-fluid/40762/1 "2009-12-14T19:06:43Z")
I’m looking for the brake fluid reservoir in my 1966 Mercedes 250. Also, what type of fluid should I put in there? Anything special? ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [December 14, 2009, 8:24pm UTC](https://community.cartalk.com/t/brake-fluid/40762/2 "2009-12-14T20:24:24Z")
1966?? The reservoir is probably part of the master cylinder…DOT 3 Brake Fluid should be fine…But with a Benz you never know, so I would check first. Is this a daily driver or are you trying to resurrect a car that’s been in storage? ---
**Author:** ![66benz](https://avatars.discourse-cdn.com/v4/letter/6/ebca7d/32.png) [@66benz](https://community.cartalk.com/u/66benz)\ **Post date:** [December 14, 2009, 8:45pm UTC](https://community.cartalk.com/t/brake-fluid/40762/3 "2009-12-14T20:45:24Z")
Yes. 1966. I’ll take another look. I’m used to working on newish American cars. It is not a commuter car, but it could be. So, I feel a little turned around when I stare at this thing. It is in really good shape. It had one owner and has paperwork trailing to the Motherland. It’s a second car. My brother said DOT 4, but this thing is so old that I don’t know. It’s ten years older than I am. lol I appreciate your help. I may take pictures and post them if you think that would help. ---
**Author:** ![SteveF](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/stevef/32/2_2.png) [@SteveF](https://community.cartalk.com/u/SteveF)\ **Post date:** [December 14, 2009, 8:55pm UTC](https://community.cartalk.com/t/brake-fluid/40762/4 "2009-12-14T20:55:41Z")
I used to own a '66 Mercedes 230, a car virtually identical to yours. And I still have the repair manual! The reservoir is sitting directly atop the master brake cylinder. The book specifies “ATE Blue, or fluid meeting SAE.70.R.3, same fluids as for clutch.” As I recall, I used DOT 3 brake fluid. I had to use DOT 4 only for the British sports cars I owned and for nothing else. ---
**Author:** ![66benz](https://avatars.discourse-cdn.com/v4/letter/6/ebca7d/32.png) [@66benz](https://community.cartalk.com/u/66benz)\ **Post date:** [December 14, 2009, 9:28pm UTC](https://community.cartalk.com/t/brake-fluid/40762/5 "2009-12-14T21:28:44Z")
Excellent. Thank you! ---
**Author:** ![66benz](https://avatars.discourse-cdn.com/v4/letter/6/ebca7d/32.png) [@66benz](https://community.cartalk.com/u/66benz)\ **Post date:** [December 14, 2009, 10:00pm UTC](https://community.cartalk.com/t/brake-fluid/40762/6 "2009-12-14T22:00:27Z")
Let me know if you want to sell your manual. I could use it. Thanks ---
**Author:** ![SteveF](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/stevef/32/2_2.png) [@SteveF](https://community.cartalk.com/u/SteveF)\ **Post date:** [December 15, 2009, 12:06am UTC](https://community.cartalk.com/t/brake-fluid/40762/7 "2009-12-15T00:06:30Z")
You may contact me at [stevefle@earthlink.net](mailto:stevefle@earthlink.net) ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [December 15, 2009, 1:18am UTC](https://community.cartalk.com/t/brake-fluid/40762/8 "2009-12-15T01:18:16Z")
DOT 3 and DOT 4 brake fluid are compatible with each other…There is very little difference between them…