Which Brake Fluid?
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Topic author - Posts: 50
- Joined: Wed Oct 19, 2016 9:16 am
- Location: Suffolk
#1 Which Brake Fluid?
Hi all.... I have an ex. US Series 3 V12.... and was wondering what brake fluid to use? I don't know what's in it at the moment but is it best to use dot 3 or dot 4 thanks.... Des.
Ex. Texas Import 1971 Series 3 V12
Des. Suffolk.
Des. Suffolk.
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#2 Re: Which Brake Fluid?
I always Use DOT 5.1. Others will tell you different, but I ignore them.
Chris '67 S1 2+2
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#3 Re: Which Brake Fluid?
Agree with Chris. Although anything but DOT 5, which is silicone and doesn't have any lubricating properties.
Perversely, DOT 5.1 isn't silicone based so it's good to use.
Regards
Stuart
If you can't make it work, make it complicated!
'62 FHC - Nearing completion
'69 Daimler 420 Sovereign
'78 Land Rover Series 3 109
If you can't make it work, make it complicated!
'62 FHC - Nearing completion
'69 Daimler 420 Sovereign
'78 Land Rover Series 3 109
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Topic author - Posts: 50
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#4 Re: Which Brake Fluid?
Many thanks to you both. 5.1 it is then.
Ex. Texas Import 1971 Series 3 V12
Des. Suffolk.
Des. Suffolk.
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#5 Re: Which Brake Fluid?
Dot 3, 4 and 5.1 are mineral (oil) based fluids, and are cross compatible. The higher the number the higher the boiling point, and cost.
Dot 5 fluid is silicone based and is not compatible with mineral based fluids.
Dot 5 fluid is silicone based and is not compatible with mineral based fluids.
Andrew.
881824, 1E21538. 889457. 1961 4.3l Mk2. 1975 XJS. 1962 MGB
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia
881824, 1E21538. 889457. 1961 4.3l Mk2. 1975 XJS. 1962 MGB
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia
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#6 Re: Which Brake Fluid?
I buy my DOT5.1 in bulk, as I have three cars and a motorcycle requiring fluid changes which I do every two years. However, I don’t buy it in four or five litre cans, but in 500ml bottles. So there is always one bottle unopened, should I have to bleed a system after (say) dropping the rear cage to repair a prop shaft. Search the interweb, check out eBay and Amazon, there are plenty of suppliers who’ll help reduce the cost.
Chris '67 S1 2+2
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#7 Re: Which Brake Fluid?
Always a matter of opinion, but Dot 3 has worked for me for years. These are street cars, not race cars, so a higher boiling point unnecessary.
John
John
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#8 Re: Which Brake Fluid?
I had the same query a few years ago and enquired with AP. Their engineer recommended DOT 3 due to having a higher lubricity than DOT 4. Seems to work well in my V12.
Kevin
Kevin
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