DOT 5 Fluid ??


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jobe05
Posts: 39
Joined: Wed Jun 22, 2011 6:53 am
Location: North Carolina
Motorcycle: 2001 GL1800
1989 GL1500

DOT 5 Fluid ??

Postby jobe05 » Wed Jun 29, 2011 2:27 pm



Went to the store the other day (Auto Parts) and they didn't have DOT 4 brake fluid as it says in the book. The clerk who was there, seemed fairly knowledgeable, and said that a lot of bike owners are switching to DOT 5, a silicone based fluid. Is it ok to us DOT 5 as long as I am doing a complete flush?

Also, I have taken the complete rear caliper and rear master cylinder apart and cleaned and rebuilt them, is there any tricks to bleeding these that I should be aware of? I have a vacuum pump that I will be using to bleed.



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vtxcandyred
Posts: 517
Joined: Thu Dec 31, 2009 5:08 pm
Location: Oregon, Ohio
Motorcycle: 1993 Honda Goldwing SE

Re: DOT 5 Fluid ??

Postby vtxcandyred » Wed Jun 29, 2011 5:20 pm

jobe05 wrote:Went to the store the other day (Auto Parts) and they didn't have DOT 4 brake fluid as it says in the book. The clerk who was there, seemed fairly knowledgeable, and said that a lot of bike owners are switching to DOT 5, a silicone based fluid. Is it ok to us DOT 5 as long as I am doing a complete flush?

Also, I have taken the complete rear caliper and rear master cylinder apart and cleaned and rebuilt them, is there any tricks to bleeding these that I should be aware of? I have a vacuum pump that I will be using to bleed.

As long as you do a complete flush then DOT 5 is fine. Thats what I did on my VTX and I'll do on the wing this winter.

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jobe05
Posts: 39
Joined: Wed Jun 22, 2011 6:53 am
Location: North Carolina
Motorcycle: 2001 GL1800
1989 GL1500

Re: DOT 5 Fluid ??

Postby jobe05 » Wed Jun 29, 2011 5:43 pm

Thanks for the quick reply, got everything done, just need to refill and bleed.

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dingdong
Posts: 2864
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: DOT 5 Fluid ??

Postby dingdong » Thu Jun 30, 2011 8:04 am

I wouldn't do it. The rubber parts in the brake cylinders, on the older bikes, won't stand up to the silicone in dot 5. Either get dot 4 or you can also go with dot 5.1 which isn't silicone based. Beware!


Tom

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