DOT3/ DOT4 :? Help!

m i k e · Could Be A Chat Bot Joined: 16 Apr 2003 Karma :

I'm currently in the midst of renovating my '87 GPZ 500 S and one of the things i'm planning on doing is servicing the brakes. Now my dad very kindly got me some DOT4 brake fluid whilst down in halfords (30mins) away and it's hard to get there, but on the reservoir cap on the front brake, it says it can only take DOT3. Now to my knowledge i've not seen any DOT3 fluid about before, so would DOT4 fluid be ok in this case?

Cheers

Mike Smile

____________________
Bom Chicka WAHHH WAHHHHHHH!

kev · I Hump Things Joined: 07 Oct 2002 Karma :

Dot 4 will be fine. Thumbs Up

____________________
20:02:36 Jammy-R6: any holes a goal
20:02:48 kev: even if its a hairy mans arse
20:02:56 Jammy-R6: hell yes

m i k e · Could Be A Chat Bot Joined: 16 Apr 2003 Karma :

Cheers Kev Thumbs Up

Mike
____________________
Bom Chicka WAHHH WAHHHHHHH!

fuzz · World Chat Champion Joined: 24 Mar 2004 Karma :

I thought DOT 3 and 4 were not compatible due to their boiling points being different?
____________________
https://www.bikepics.com/members/fuzzbcf/
Bikes: '99 NSR125R, '00 SV650S, K1 GSX-R600, '97 CB500, K3 SV1000S, '16 VFR800

kev · I Hump Things Joined: 07 Oct 2002 Karma :

You have to completely replace it but it will be fine.
____________________
20:02:36 Jammy-R6: any holes a goal
20:02:48 kev: even if its a hairy mans arse
20:02:56 Jammy-R6: hell yes

m i k e · Could Be A Chat Bot Joined: 16 Apr 2003 Karma :

There's always one to go and make me worry again, because otherwise i'd just have bought a bottle of brake fluid only to go and help strip paint off peoples cars that I don't like! Razz

I've had quite a few people now wind me up saying that DOT4 would not work in a DOT3 system Sad

Mike
____________________
Bom Chicka WAHHH WAHHHHHHH!

kev · I Hump Things Joined: 07 Oct 2002 Karma :

The general rule is you can go up a grade but not down.
____________________
20:02:36 Jammy-R6: any holes a goal
20:02:48 kev: even if its a hairy mans arse
20:02:56 Jammy-R6: hell yes

Rory · Traffic Copper Joined: 14 May 2004 Karma :

Also DOT 5.1 (which I hadn't heard of) is apparently compatible with DOT4, but DOT5 is NOT compatible with DOT4.
____________________
My Old CBR400RR | Bike Oil FAQ | Petrol FAQ

mr jamez · World Chat Champion Joined: 04 Aug 2003 Karma :

Dot 3, 4 and 5.1 are all compatible. Just flush the system and fill with dot 4 Smile

Grubby · Spanner Monkey Joined: 15 Aug 2004 Karma :

Flush through & you'll be fine.....trust me I'm an engineer Laughing

Rory · Traffic Copper Joined: 14 May 2004 Karma :

LOL, sounds like dietry advice Smile

____________________
My Old CBR400RR | Bike Oil FAQ | Petrol FAQ

m i k e · Could Be A Chat Bot Joined: 16 Apr 2003 Karma :

Cool great stuff guys Thumbs Up

Cheers,

Mike Smile

____________________
Bom Chicka WAHHH WAHHHHHHH!