Dot 4 has a higher boiling point. Could make a difference in down hill situations. In addition, the Castrol Dot 4 is a higher quality fluid more resistant to absorbing moisture. Besides leading to rust and corrosion is the system, moisture will obviously lower the boiling point. Enough of it could cause unexpected failure after a hard stop. I had it happen to me in a 924. Panic stop, later no brakes. Bleed and refilled system, was okay again. Good brake fluid is cheap insurance. Dennis -----Original Message----- From: Vanagon mailing list On Behalf Of Chris Turner Sent: Saturday, August 30, 1997 2:35 AM To: Vanagon@GERRY.SDSC.EDU Subject: Re: DOT3 vs DOT4 In a message dated 97-08-28 11:58:25 EDT, richard@BALLY.COM writes: << Seems like there have been several e-mails about only using DOT4 in Vanagon brake systems. The manual in my 1985 says to use DOT3 or DOT4. Anyone care to comment as I put DOT3 in mine. Did I screw up??? >>
no, you're fine.. there are not many cars that absolutely just HAVE to have DOT4, and the Vanagon ain't one of them.. DOT3, DOT4, in the vanagon it makes no difference. chris |
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