Re: [MV] Dot 3 or Dot 5

From: Ryan M Gill (rmgill@mindspring.com)
Date: Tue Jul 08 2003 - 15:57:21 PDT


At 6:41 PM -0400 7/8/03, G.R. Baker wrote:
>How can I tell which brake fluid I have, Dot 3 or Dot 5? It is odorless,
>not oily, the truck is my M813A1 that was rebuilt by the USMC in 88 at
>Albany, GA.

Take a bit of the fluid. Put it in a glass. Pour a bit of DOT4 into
it. Does it mix or does it stay separate? IF it mixes, then its DOT3
or 4. IF it doesn't, it's DOT 5. DOT 5 is silicone based. DOT 3 is
Polyalkylene Glycol based.

Another test I belive that works is that DOT 3 and 4 will absorb
water where as DOT 5 will not.

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