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Post by kostas on Sept 16, 2014 18:17:56 GMT 1
I think the right stuff to use is DOT 3 correct?
Will this lift the paint if spilled? Can I use DOT 4? or it will damage the seals etc?
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Post by Yogi on Sept 16, 2014 18:39:19 GMT 1
I use dot4 with no problems but yes it does peel paint
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Post by kostas on Sept 16, 2014 19:00:24 GMT 1
Does DOT 4 also peel the paint off??
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Post by marsbar350 on Sept 16, 2014 19:04:16 GMT 1
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Post by kostas on Sept 16, 2014 19:15:42 GMT 1
Interesting...
Now is the right time as my brake lines are all clean, as mixing is not allowed.
I might give it a go!
Kostas
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Post by Yogi on Sept 16, 2014 19:39:42 GMT 1
I have got a bottle of silicone fluid but mine already had normal in so haven't tried it yet |
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Post by Yogi on Sept 16, 2014 19:40:27 GMT 1
Does DOT 4 also peel the paint off?? Yes mate Dot4 does peel paint aswell |
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Post by kostas on Sept 16, 2014 19:49:00 GMT 1
Does DOT 4 also peel the paint off?? Yes mate Dot4 does peel paint aswell I will try 5 only because it does not touch the paint. |
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Post by andrew on Sept 16, 2014 20:14:54 GMT 1
Call me a tight b^$!*rd if you like, but this dot 5 stuff aint exactly cheap is it?? :-( (Bracing myself for the hail of abuse now!!!!!!!!) |
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Post by marsbar350 on Sept 16, 2014 20:23:13 GMT 1
Call me a tight b^$!*rd if you like, but this dot 5 stuff aint exactly cheap is it?? :-( (Bracing myself for the hail of abuse now!!!!!!!!) works out about £1 a fluid change for me easier than taking calipers apart and respraying  just saying like  |
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Post by JonW on Sept 17, 2014 4:34:05 GMT 1
Dot5 can be flushed thru the system and used, you dont need to replace seals. Plenty of mi information out there about DOT5... Bear in mind it often is quite spongy in use, you dont often get as nice a lever with 5. Just my experience and will put my flame suit on... LOL!
I use DOT4 here, also no flushing and doesnt kill seals.
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Post by andrew on Sept 17, 2014 8:35:14 GMT 1
Call me a tight b^$!*rd if you like, but this dot 5 stuff aint exactly cheap is it?? :-( (Bracing myself for the hail of abuse now!!!!!!!!) works out about £1 a fluid change for me easier than taking calipers apart and respraying just saying like Oops I stand corrected lovl |
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Post by bare on Sept 17, 2014 23:03:38 GMT 1
All Brake fluid peels paint, better than some strippers actually. Try not to spill it :-)
Sillycone fluid 5, Once fitted into my just restored (12 years work) XK120.
Bought /used that fluid simply because of the doesn't eat paint claims.
Welll that proved as complete Bullshit.
It messed the supposedly safe to use seals, causing leaking which dissolved paintwork, lots of it, within a couple of weeks.
Entire Brake system had to be removed and rebuilt. A Hyd press was needed to dismantle the seized Master cyl.
Not to mention the days/weeks required to respray damaged paintwork.
Pissed is a charitable descriptor.
This was few years back.. Maybe? the formulations have been improved or not:-)
Caveat Emptor Kids
Note that 5.1 fluid is NOT the Sillycone crap.. As makers try to distance themselves from it.
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Post by JonW on Sept 17, 2014 23:53:52 GMT 1
Wow, Ive never heard of that bare, Ive used it in many classics (Alfas and Triumphs) over the years as well as bikes and not a dribble ruined paint and I never had a seal issue, not with old or new parts, or a mixture of the two. I dont use it now, but really only cos its not so easy to get in Aus and I always thought the slight spongeyness was annoying.
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Post by bare on Sept 19, 2014 3:47:20 GMT 1
yesss...was a surprise to me as well. Sadly not a pleasant one. Live 'n learn.
Notably my New Acura TL has a wee note in the owners' manual warning that the use of Dot 5 fluid instantly voids the Honda factory waranty
Clearly there is serious intent inherent.. for whatever reason.
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Post by Delbert on Sept 19, 2014 7:17:57 GMT 1
I was lead to believe dot 5 was more suited for track use as it absorbed for moisture so would be changed more often ?
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Post by JonW on Sept 19, 2014 8:49:05 GMT 1
Delbert, Dot5 is not hydroscopic, so will not take on water. That was the real big thing for classic cars that dont get used much, hence lots of us went mad for it in the 90s. I never had an issue moving to it in older systems but obviously bare did, the slight spongeyness to the pedal/lever was my only issue.
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Post by Delbert on Sept 21, 2014 10:31:45 GMT 1
Delbert, Dot5 is not hydroscopic, so will not take on water. That was the real big thing for classic cars that dont get used much, hence lots of us went mad for it in the 90s. I never had an issue moving to it in older systems but obviously bare did, the slight spongeyness to the pedal/lever was my only issue. Thanks for the info ,, I was obviously miss informed or didn't understand correctly why it wasn't a good thing to use in modern vehicles ,,, as you say probably down to the softer feel |
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Post by marsbar350 on Sept 21, 2014 19:15:20 GMT 1
nothing wrong with a bit of softer braking
just squeeze a little harder
i passed plenty of bigger bikes on the back straight at cadwell on the brakes
getting punted over the bars doesnt seem like much fun
there wasnt any fading either
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Post by kickstart on Sept 21, 2014 21:09:24 GMT 1
Hi
DOT 5 should react with paint. Seems one of the main users is the US military and they just lobbed it in to top up conventional fluids.
It doesn't absorb water so should take far longer before it needs to be changed. Down side is that as it doesn't absorb water getting any water out of the system is very difficult. The water will tend to pool in the lowest point in the system (so won't come out of the bleed nipple normally) and is then in a perfect place to get hot, boil and have very spongy brakes.
All the best
Keith
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