Polaris Slingshot SL 2020 Owner's Manual page 120

MAINTENANCE
BRAKE FLUID
q
The brake fluid master cylinder reservoir is located under the hood on the
driver's side of the vehicle. Check the brake fluid level before each use of the
vehicle. Maintain the fluid level between the MIN and MAX lines on the reservoir.
If the BRAKE FAILURE indicator illuminates, brake fluid may be low. Check the
brake fluid level.
Use DOT 4 brake fluid in the brake fluid reservoir. Use fluid only from a sealed,
clean container.
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