Which Brake Fluid to use

[BigRedSwitch]

A month after having the car serviced (at a main agent) I popped the bonnet to check the fluid levels and I noticed that the brake fluid was below the Min mark. I'll get some brake fluid and top it up myself but which sort to get?  It seems that brake fluids can be glycol-based (DOT 3 & 4) or silicon-based (DOT 5).  What do I need for my 2015 Auris Hybrid.  Do I need to use whatever fluid Toyota sell or can I use something from Halfords, or the like? 

[BigRedSwitch]

Sorted - sort of.  Seems either DOT3 or DOT4 is acceptable but are they mutually compatible?  Better ask Toyota, I guess.

[FROSTYBALLS]

The owners manual states either DOT3 or DOT4, which are glycol based. DOT5.1 is also glycol based.

DOT5 is silicone based and cannot be mixed with either DOT3, 4 or 5.1.

The difference is the boiling points:

[BigRedSwitch]

Thanks Frosty.  It looks like DOT4 is perhaps the one to go for but, to be safe, I'd better check with Mr T.  I would hope that DOT5 has been withdrawn.

[furtula]

Check owners manual, should be listed in there. I'd go with dot4.

[FROSTYBALLS]

5 hours ago, FROSTYBALLS said:

The owners manual states either DOT3 or DOT4

 

8 minutes ago, furtula said:

Check owners manual, should be listed in there.

Gave the info from the owners manual earlier