GMC 2007 Acadia Owner's Manual page 422

What to Add
When you need brake fluid, use only DOT-3 brake
fluid. Use new brake fluid from a sealed container
only. See Recommended Fluids and Lubricants
on page 511.
Always clean the brake fluid reservoir cap and the
area around the cap before removing it. This
helps keep dirt from entering the reservoir.
CAUTION:
{
With the wrong kind of fluid in the brake
system, the brakes may not work well.
This could cause a crash. Always use the
proper brake fluid.
422
Notice:
•
Using the wrong fluid can badly damage
brake system parts. For example, just a
few drops of mineral-based oil, such
as engine oil, in the brake system can
damage brake system parts so badly that
they will have to be replaced. Do not
let someone put in the wrong kind of fluid.
•
If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can
be damaged. Be careful not to spill brake
fluid on your vehicle. If you do, wash it
off immediately. See Washing Your Vehicle
on page 482.