Glycol or silicone based brake fluid?
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Posted:
Sun Jan 10, 2010 6:27 pm
by chiroman
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Posted:
Tue Jan 12, 2010 7:55 pm
by asperformance
IMO never ever buy a dot5 silicone b/fluid - these days its mostly aimed at military applications and shouldn't be used in a road car, also be aware that it can attack certain seals in the system
** this is not to be confused with dot5.1 which is specifically an ABS fluid and can in some manufacturers have a performance advantage which is perfectly fine to use **
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Posted:
Tue Jan 12, 2010 11:55 pm
by chiroman
The two articles were educational for me as although I've had Halfords dot 5.1 in WR1 for a couple of years on the basis of a higher boiling point I also thought, mistakenly, dot 5.1 was a silicone fluid and and thus wasn't hygroscopic.
However, as you say, its the dot 5 which is the silicone fluid and not hygroscopic whereas the dot 4, & 5.1 are the glycol fluids and will absorb the water vapour and dropping the boiling point.
So I'll be replacing the dot 5.1 with new when convenient as its a couple of years old.
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Posted:
Wed Jan 13, 2010 12:54 am
by hightower
i use glycol, some weeks no toppoing up required some weeks have to use loads........
It is great for drying out gas on an oil rig
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Posted:
Wed Jan 13, 2010 1:38 pm
by chiroman
I used to design north sea oil & gas platforms!