Dot 3 or Dot 4 ?? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 10 (permalink) Old 07-02-2011, 12:31 AM Thread Starter
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Dot 3 or Dot 4 ??

My Clymers manual says clearly DOT 3 for brake fluid.
The top of my master cylinder on my 2004 clearly says DOT 4

Which one do I put in??
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post #2 of 10 (permalink) Old 07-02-2011, 12:58 AM
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Quote:
Originally Posted by jgcable View Post
My Clymers manual says clearly DOT 3 for brake fluid.
The top of my master cylinder on my 2004 clearly says DOT 4

Which one do I put in??
I use DOT 4 because it absorbs less moisture and has a higher boiling point. Either could be used.

JM2001

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2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
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post #3 of 10 (permalink) Old 07-02-2011, 12:59 AM
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DOT 4 is just a synthetic version of DOT 3. It will last longer before turning into goo, and will have a higher boiling point, which probably doesn't really mean much on these bikes.

Whichever you use, it should be flushed out and changed every 2-3 years. It's also smart to do it on cars every so many years as well, as brake fluid absorbs moisture, and causes calipers to rust/freeze over time, and flushing the fluid helps keep this from happening.

Investing in a set of speedbleeders makes it easy.

http://www.speedbleeder.com/



Good Luck!

05 VN750
Iridium Plugs
Spline Lubed front/rear
ignition pickups gapped
AGM Battery
Relocated MOSFET R/R
Coaster Mod
Pilot Screws at 2-1/4 turns
Slipstreamer S-08 Windshield
F&S Saddlebags/Mounts
Luggage Rack
12V Outlet
Mustang Seat
sissy bar
Oversized Pirelli Front Tire
6k miles

PW50, XR50, TTR90, XR100, DT175 (2-smoker), CRF230F, XR250R (dual sported), XR400R 4 KIDS, LOL!

1966 mustang street/strip
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post #4 of 10 (permalink) Old 07-02-2011, 01:23 AM
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Quote:
Originally Posted by jgcable View Post
My Clymers manual says clearly DOT 3 for brake fluid.
The top of my master cylinder on my 2004 clearly says DOT 4

Which one do I put in??
Mechanics will verify it is safe to go up or down one DOT #. Personally, I'd stay with DOT4.

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #5 of 10 (permalink) Old 07-02-2011, 01:54 AM
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Quote:
Originally Posted by WilliamTech View Post
Mechanics will verify it is safe to go up or down one DOT #. Personally, I'd stay with DOT4.
PM sent

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #6 of 10 (permalink) Old 07-02-2011, 10:32 AM
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Quote:
Originally Posted by WilliamTech View Post
Mechanics will verify it is safe to go up or down one DOT #. Personally, I'd stay with DOT4.
NOT ENTIRELY TRUE.

In the case of DOT 3 and 4... Yes.

However, DOT 5 is silicone based, and is NOT compatible with DOT 3 or 4.

05 VN750
Iridium Plugs
Spline Lubed front/rear
ignition pickups gapped
AGM Battery
Relocated MOSFET R/R
Coaster Mod
Pilot Screws at 2-1/4 turns
Slipstreamer S-08 Windshield
F&S Saddlebags/Mounts
Luggage Rack
12V Outlet
Mustang Seat
sissy bar
Oversized Pirelli Front Tire
6k miles

PW50, XR50, TTR90, XR100, DT175 (2-smoker), CRF230F, XR250R (dual sported), XR400R 4 KIDS, LOL!

1966 mustang street/strip
4-speed, nitrous
[email protected] 135.6
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post #7 of 10 (permalink) Old 07-02-2011, 12:45 PM
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I'd go with what is written on the MC itself. Clymers are out of date in some ways..and do have typos.


Dot 4 is better anyway...............

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post #8 of 10 (permalink) Old 07-02-2011, 01:09 PM
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Quote:
Originally Posted by Knifemaker View Post
I'd go with what is written on the MC itself. Clymers are out of date in some ways..and do have typos.


Dot 4 is better anyway...............
I agree with KM!

1986 Black Kawasaki Vulcan VN750 "Black KAWK"
VN750 #9300 & VROC #33453

EMGO Handlebar, V&H Exhaust, Drop Shocks, Raised/Painted Fork, MeanStreak Seat, Tank Bib, ME880 Oversize Tires, Engine Guard, Custom Mirrors, Chris Products Turn Signals, Ear Shave, 150/42 Jets, PINGEL Fuel Valve, MCCT, Volt Meter, Shendegen R/R, AGM Battery, Coastered, .020 Coils, Relo Gauges & Headlamp, SilverStar Ultra, LED Flashing Brake Light, Center Stand Delete, WOLO Airhorn.
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post #9 of 10 (permalink) Old 07-03-2011, 10:44 PM Thread Starter
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Type 4 it is.
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post #10 of 10 (permalink) Old 07-04-2011, 06:33 PM
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I use the DOT 4.

2005 VN 750
MF Battery
Plexistar windshield
.040 pilot jets.
Splines lubed 1955 mi.
Marbled
Iridium plugs
Reset pickup coil gaps.
Metzeler ME=880s
Shindengen MOSFET RR
V & H Cruzers
Degoated
Speed bleeders
MCCTs.
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