Join Date: Aug 2011
Year/Make/Model: 2014 Kawasaki Vulcan Vaquero ABS SE
Color: Orange SE
It might be time to go ahead and flush the brake fluid. Even if the fluid at the reservoir looks 'okay', it might be severely degraded down the line. Mine had a slight yellow tinge at the reservoir but came out JET black the last time I did it! That degraded fluid can damage brake components and shorten their life.
And, to answer your question, as others have said, DOT 4 is fine!
DOT 3 will not work because it can't handle the potential heat your motorcycle brakes could put out. Sometimes you'll find bottles labeled DOT 3/4, those are fine too, it's just labeled like that to let people who own vehicles labeled for DOT 3 use that DOT 4 is fine to run (and it is)
DOT 5 must absolutely be stayed away from. It cannot mix with DOT 3 or 4. It has a lot of advantages, but it also has disadvantages. For one, it's very spongy and doesn't work with ABS (though not an issue on the non-ABS 900!). But the biggest.. it will eat everything up if it gets mixed with even a tiny amount of DOT4 in the system! Switching to DOT 5 requires the replacement of every rubber part and seal in your brake system. (So just stick with DOT 4!)
"8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."
Romans 5:8 (NIV)
2014 Kawasaki Vulcan 1700 Vaquero ABS SE
iPod Connector Kit, Kuryakyn Highway Pegs, Mustang Touring Seat, Marvella's Hitch, Kuryakyn Trailer Wiring Kit, Haul-Master Tag-a-Long Cargo Trailer
2011 Honda Shadow Aero 750 (Wife's)
Memphis shades quick-release windshield, OEM Solo Seat, Mustang Fender Bib, Chrome Solo Luggage Rack
Past: 2006 Vulcan 900 Classic LT