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#1 Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 4:13 pm
by gmunro
Hi guys,
Has anybody had experience using Castrol Dot 4 Synthetic Brake Fluid? Not really sure about the "synthetic" bit. Is this like silicone or the standard brake fluid?
Grateful for any replies. Many thanks.
George
#2 Re: Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 4:20 pm
by Mich7920
No experience with this one but DOT 4 isn't Silicone.
The silicone is DOT 5
Mich
#3 Re: Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 4:31 pm
by gmunro
Thanks Mich. Trying to find out exactly what "Synthetic" fluid is.
Cheers,
George
#4 Re: Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 4:42 pm
by mgcjag
George...just try a quick google search....i just did ....the first thing that came up was...All DOT3 & DOT4 fluid is synthetic...ie it is man made and does not have a petroleum base. DOT3 & 4 can safely be mixed.
However its from the net so is it true....i would do a bit of research... Steve
#5 Re: Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 5:09 pm
by Geoff Green
3,4,5.1 are organic esters and considered synthetic
5 is silicone and I would also consider it to be synthetic
#6 Re: Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 5:45 pm
by gmunro
Steve and Geoff,
Many thanks for your very speedy replies. Steve, I will go down your suggested route and start with Google and then head on from there. Again, Many thanks. George
#7 Re: Castrol Dot Synthetic Brake Fluid
Posted: Fri May 11, 2018 6:52 pm
by PhilP
Hi George
After having a leak on my brake fluid reservoir which took all my paint of the bulk head I had it replaced with this
I haven’t noticed any difference with the brakes and if it leaks again I’m not going to have the hassle of repainting the bulk head.
Regards
Phil
#8 Re: Castrol Dot Synthetic Brake Fluid
Posted: Sat May 12, 2018 6:22 am
by cactusman
Lots more about the mysteries of brake fluid and some views on their merits...
viewtopic.php?f=3&t=12262&hilit=Brake+fluid