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Motul vs. Super Blue

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Old 10-21-2003, 03:13 PM
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Default Motul vs. Super Blue

I've always used Ate Super Blue brake fluid and have no complaints. Now I'm seeing Motul advertised quite a bit and supplied with some of the big brake upgrades.

They're both DOT 4 and seem to be priced about the same. How do the two compare in terms of wet and dry boiling points? Any advantages of one over the other?
Old 10-21-2003, 03:25 PM
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Default Brake Fluid Comparison

Motul 600 has a higher wet and dry boiling point; only Castrol SRF is better, but much more $$$.<ul><li><a href="http://www57.pair.com/lane/bfluid.htm">Brake Fluid Comparison</a></li></ul>
Old 10-22-2003, 04:39 AM
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Super Blue tends to destroy A4 master cylinders.
Old 10-22-2003, 08:30 AM
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Default destroy A4 master cylinders????

Chris - that's quite a claim, on what evidence are you basing it?

Super Blue meets DOT 4 requirements, it should be compatible with the entire system.
Old 10-22-2003, 12:30 PM
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search the archives.tons of posts about superblue=bad.
Old 10-22-2003, 12:42 PM
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Default Quite a few people had to have their clutch master cylinders replaced...

and were told that the blue dye was the culprit.
Old 10-22-2003, 12:52 PM
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Default Interesting

I've used Super Blue in my '99 A4 and my '00 A6 for years, but they both have Tiptronic, so no clutch. No problems with the brakes to date.

Guess I've been lucky
Old 10-25-2003, 12:35 PM
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While it was reputed to damage clutch cylinders, it never harmed the brake master cylinder.
Old 10-25-2003, 02:54 PM
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exactly how i remember it. the brakes and clutch share the same resevoir.
Old 10-25-2003, 11:57 PM
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But used different seal/rubber compounds. Brakes fine; clutch couldn't handle it.


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