Suzuki GSX1300BK Owner's Manual page 151

 WARNING
Failure to keep the brake fluid reservoir
full with proper brake fluid can be haz-
ardous. The brakes may not work cor-
rectly without the proper amount and
type of brake fluid. This could lead to an
accident.
Inspect the brake fluid level before each
use. Use only DOT4 brake fluid from a
sealed container. Never use or mix differ-
ent types of brake fluid. If there is fre-
quent loss of fluid, take your motorcycle
to a SUZUKI dealer or a qualified
mechanic for inspection.
CAUTION
Spilled brake fluid can damage painted
surfaces and plastic parts.
Avoid spilling any fluid when filling the
reservoir. Wipe up spills immediately.
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