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What's wrong with Valvoline Synpower brake fluid (3/4)

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Old 04-01-2008, 12:25 PM
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Default What's wrong with Valvoline Synpower brake fluid (3/4)

I read today that there may be a problem with running the Valvoline Synpower brake fluid, can anyone please elaborate on that? I thought it was a good alternative to factory fluid. It's a DOT 3/4 so there shouldn't be any compatibility issues.
Old 04-01-2008, 01:07 PM
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I use it with no issues.
Old 04-01-2008, 01:15 PM
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If you read this thread:

https://ls1tech.com/forums/manual-transmission/890248-mcleod-adj-master.html

He states that he was using Valvoline brake fluid and just found out that it's a problem. I'm just curious what exactly the problem was. I was hoping someone else in here knew what he was talking about. I'll PM him and see what he has to say.
Old 04-01-2008, 01:36 PM
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pm replied.

i saw ppl stating that the full sythetic was not good to use w/ the mcleod master cylinder. so i went and replaced it w/ the gm brake fluid and so far its staying clean and not getting dirty w/ in days. im also gonna get the mcleod rebuild kit as well since the rubber seal is leaking

-brandon



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