brake fluid help??

[zip kart]

Ok guys
i have kelgate hydraulic brake system
i just bought new pads and a new seal kit cpst me 50euro just for them
anyway now i have to get brake fluid
pn the master cylinder cover it says dot 5 silicone

im after trying loads of places for it and no1 has it
they have dot 5 non silicone and dot 5.1

I got dot 5.1 will that work ok
dont want to use the wrong 1 caus im just after getting a new seal kit

any advice would be great

 

[zip kart]

Would i ruin the new seals by using dot5.1 instead of dot 5 silcone

 

[zip kart]

Does anyone have any advice ??

 

[devino246]

DOT 5.1 is polyethylene glycol based. DOT 5 is silicone-based. DOT 5 non-silicone is an oxymoron; DOT 5 fluid, by definition, contains at least 70% diorgano polysiloxane (silicone), by weight).

 

[itsid]

confirmed by google, brembo, motul, bel-ray and wikipedia.
So, use any DOT 5 but DOT 5.1

'sid

 

[zip kart]

So i cant use the dot 5.1 i got
would that ruin the new seals if i used dot 5.1 instead of dot 5 silicone

 

[devino246]

So i cant use the dot 5.1 i got
would that ruin the new seals if i used dot 5.1 instead of dot 5 silicone

Probably. DOT 5.1 (polyethylene glycol) is also hygroscopic, while DOT 5 is (diorgano polysiloxane) is hydrophobic.