1957 CDV Brake Fill Tube-Fluid Level

Started by My57CDV, September 22, 2018, 01:51:05 AM

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I believe the Brake Fluid Fill port is the vertical tube on the left side of the power brake unit on the fire wall.

I removed the Top Cover (with the square nut) - where should the Brake Fluid Level be at?

I did not see any lines nor marks on / in the Tube to indicate fluid level. I have read the Service Manual and not found any direction for Fluid Level.

Experienced input Requested Please!

Mark Anderson

gary griffin

I fill mine up to about 1/4 inch from the top.
Gary Griffin

1940 LaSalle 5029 4 door convertible sedan
1942 Cadillac 6719 restoration almost complete?
1957 Cadillac 60-special (Needs a little TLC)
2013 Cadillac XTS daily driver


1970 Deville Convertible 
Dallas, Texas

Mike Josephic CLC #3877

DOT 3 is fine.  Do you know what's in your car
right now?  It's best to not mix fluid types.  You
most likely have DOT 3 as that has been the
standard for many years.

1955 Cadillac Eldorado
1973 Cadillac Eldorado
1995 Cadillac Seville
2004 Escalade
1997 GMC Suburban 4X4, 454 engine, 3/4 ton
custom built by Santa Fe in Evansville, IN
2011 Buick Lucerne CX
CLCMRC Museum Benefactor #38
Past: VP International Affiliates, Museum Board Director, President / Director Pittsburgh Region


Thanks! everyone for the Reads and Replies ...

I found the Specific Direction in the 1957 Shop Manual ...
Page 8-10
  (9)   7.  Refill reservoir only with clean Delco Super No. 11 Brake Fluid to within 3/4" of top.

I am using DOT 3, Non Synthetic.

Mark A.