Dave F Posted July 19, 2006 Share Posted July 19, 2006 Going to change my brake fluid this week my question is, Can I change from the dot 4 that is already in there to dot 5.1 just by flushing the old stuff through? Link to comment Share on other sites More sharing options...
Ark Posted July 19, 2006 Share Posted July 19, 2006 Yes. You sure you've already got DOT4? Stock uses DOT3 (According to the filler cap) Link to comment Share on other sites More sharing options...
Angarak Posted July 19, 2006 Share Posted July 19, 2006 Some DOT 5.1's will mix ok with DOT 3/4 ...though for peace of mind you may want to buy a couple litres and give it a good flushing Link to comment Share on other sites More sharing options...
Dave F Posted July 19, 2006 Author Share Posted July 19, 2006 Yes. You sure you've already got DOT4? Stock uses DOT3 (According to the filler cap) Not sure fella just looking at an faq on here about servicing and it said use either dot 4 or 5.1 Link to comment Share on other sites More sharing options...
Dave F Posted July 19, 2006 Author Share Posted July 19, 2006 Some DOT 5.1's will mix ok with DOT 3/4 ...though for peace of mind you may want to buy a couple litres and give it a good flushing Yeah this was the plan just wanted somebody to confirm. Thanks matey Link to comment Share on other sites More sharing options...
lockys96 Posted July 19, 2006 Share Posted July 19, 2006 isnt dot 3 been faised out, im sure ive seen dot 4 with on the back instructions, saying about dot3. think its just as the cars are like 10years old, and now things have moved on Link to comment Share on other sites More sharing options...
Alex Posted July 19, 2006 Share Posted July 19, 2006 Motul RBF600 Dot5.1 2Litres - bleed the left rear till the new fluid appears etc.. Link to comment Share on other sites More sharing options...
Ark Posted July 20, 2006 Share Posted July 20, 2006 Not sure fella just looking at an faq on here about servicing and it said use either dot 4 or 5.1 Check your filler cap as stamped by Mr T - it's more likely to be right than some Internet FAQ. From the factory, it uses DOT3. Which is why switching to DOT5.1 makes such a great difference Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 20, 2006 Share Posted July 20, 2006 The dry and wet boiling points of some DOT3 and DOT4 fluids far exceeds some DOT5.1 fluids. The DOT number also takes into account lubricity, as well as dry and wet boiling points, shelf life, blah blah. Link to comment Share on other sites More sharing options...
Lucifer Posted July 20, 2006 Share Posted July 20, 2006 http://www.mkivstore.com/index.php?target=products&product_id=1744 Only 1L needed for J-Spec Braked flush. 1.5 for UK Brakes and 2L for a UK car. Link to comment Share on other sites More sharing options...
Alex Posted July 20, 2006 Share Posted July 20, 2006 I'd have more if doing a thorough flush...and then you've got spare for top ups. Link to comment Share on other sites More sharing options...
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