AC Owners Club Forum
AC Owners Club Forum => Ace, Aceca & Greyhound Forum => Topic started by: gtjoey on July 20, 2022, 02:07:29
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Guys Im down to the brakes, put 4-- miles on the car in the last week!
But the brakes area little soft.
Ive got drums and been redone. Needs a good flush and bleed.
DOT 4?
MINERAL FLUID?
Im not sure, cant find it anywhere.....
Thanks in advance.
gtjoey1314
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Hi Joey.
DOT4 would be fine but personally I would use a silicone fluid, if you Google automec silicone brake fluid you can see all the spec. It's a DOT 5 fluid which is better anyway but more importantly is less prone to absorbing moisture and does not damage paintwork like standard brake fluid. It's a bit more expensive but we'll worth it.
Hope this is of help and hope your first 4 miles in your aceca went well!
Kind regards Nick
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Here is a link to some of the pros and cons of silicone versus conventional. Pay special attention to the paragraph discussing trying to put silicone fluid into a system that’s already had conventional fluid.
https://mossmotoring.com/conventional-vs-silicone-brake-fluid/ (https://mossmotoring.com/conventional-vs-silicone-brake-fluid/)
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Sorry guys that was 400 miles.......in 2 weeks!
I was just making sure it was not the old mineral fluid used for Bentley in Rolls.
Having fun....will try to post some pictures.
Thank you everyone.
gtjoey1314
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Hello!!
would be a simple DOT4 oil be ok? any issue with seals and rubber pipes?
I would go for Castrol DOT4, that seems the heir of the Girling Crimson.
https://www.amazon.co.uk/Castrol-15036B-Brake-Fluid-Liter/dp/B0069RGK20
i dont know what is on the car now, but the color is definitely not crimson.
Eddie
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Hi Eddie, DOT 4 will be perfectly adequate and as mentioned previously you could use silicone DOT5 fluid, but bear in mind the possible problems as noted by PJ Bowman.
I've always used silicone fluid on cars I've restored but these all have new brake pipes, hoses, seals etc so very little chance of contamination.
If there is any chance of old fluid in your braking system then standard DOT 4 is the way to go.
Hope this is of help.
Happy New year!
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Thanks!
Happy new year!