Thats is a load of tosh.

5.1 is silicone based, anything below that isnt.

They will not mix.

Perhaps you'd care to read some of the links above before venturing this opinion? Some rather well qualified people say it isn't.

Dot 5 = silicone based

Dot 5.1 = glycol based same as Dot 3 and 4.

As you were, folks

Thank you nick

I apologise, boss

I was mistakenly thinking of something I'd obviously not read correctly on the back of a bottle in Halfords.

So is it worth trimming this thread, stealing all the useful bits and making a sticky about which brake fluids work together etc etc?

This question and the views on DOT 5.1 / Super 4 come up a lot.

The DOT 5.1 at halfords is definetely not silicone based and does state on the back of the bottle that it meets or exceeds the standards for Super DOT 4. I'm still none the wiser though. :confused:

http://www.briskoda.net/forums/post745911.html

Thats post by me above has a link in it which explains it.

Basically DOT 5.1 is sometimes called super DOT 4, because it has the performace of DOT 5, but can is compatible with DOT 3/4

http://www.briskoda.net/forums/maintenance-performance/brake-fluids-hopefully-definative-thread/65339/#post746782

Right guys, please feel free to comment on that thread so i can correct any mistakes I have made and then hopefully we will have a ncie clean refernce thread for future use.

Thanks

How much fluid is required for a complete change on the Fabia/Ibiza?

Steve