Identifying vehicle fluids by color, consistency, and location
Brown to black with thick consistency =
Oil
Check to find exactly where the oil is coming from (could be engine, sump, filter, driveshafts or gearbox) and try to trace all leaks to their source (often oil will pool in one area but will originate from above). Clear away any dirt and grime to determine the actual leak. Most leaks come from failed plugs, seals, or gaskets.
Neon green, orange, blue, or red =
Antifreeze
Usually neon blue-green in color and will be found leaking from the front of your vehicle (water pump, radiator, or thermostat housing). It often has a sweet smell.
Light clear brown or thick black =
Brake fluid
Will often be found leaking from around the wheels.
Thick reddish or clear =
Power steering fluid
Will most likely be found leaking from the pipe connections on the steering rack.
Reddish pink =
Transmission fluid
Often has a burnt smell. Be aware that mechanics sometimes use transmission fluid interchangeably with power steering fluid.
Amber color with strong fuel smell =
Fuel leak
Strong, distinctive odor will tell you if you are leaking fuel. This is very dangerous...you must take care of it right away!