View Here : Transmission Fluid Color Brown
ATF+4® is not permanent; as the fluid ages it may become darker or appear brown in color. ATF+4® also has a unique odor that may change with age. With ATF+4® fluid, color and odor are no longer indicators of fluid condition and do not necessarily support a fluid change." Whatever that means.
Black Transmission Fluid Color. While amber, brown, and black are usually harmless, that is not the case with black transmission fluid. The reason that the fluid has gotten to be black is because of issues in the transmission. To the untrained eye, brown and black transmission fluid have similar colors. If you are unsure give it a sniff.
Good level but brown colour: If your transmission fluid has a brownish tinge and a slightly burnt smell to it, then there is a problem. It could be just that the fluid is very old and no longer protecting the transmission’s internal components properly, or there are worn components causing excess friction and heat.
Brown Color, with a Distinctly Burnt or Varnished Odor— the fluid’s burnt, and you may already be experiencing transmission operating problems. If the trans seems to be operating okay, you might still get away with a complete fluid exchange service and filter replacement.
I completed the wet PTO upgrade yesterday and when I begin to add the 2 1/2 quarts of ATF I had lost, I noticed the new Transynd was totally pink, but my existing fluid was more light brown. I have 12,500 miles on the coach so the miles are low, although the fluid is 5 years old. I wouldn't think age would affect the color however.
New automatic transmission fluid has a bright to dark red, translucent color. The red color is the result of dye that is added to the transmission fluid for identification. Color is NOT an indication of the quality of the fluid nor the condition.
I checked the transmission fluid and saw that it was brown. This was also pointed out to me when I got my oil changed recently. The guy (just an oil change guy, not my trusted mechanic) tried to urge me to get it flushed.
Dark brown or black transmission fluid is a sign of old or burnt transmission fluid. If your fluid is dark brown or black, it needs to be changed, and your transmission should be checked for problems to make sure it is not overheating and burning the fluid.
What is a color of a clean transmission fluid? New fluid has a red translucent color. It will be probably hard to see it using a dipstick, but if you pour some on a white rag, you will see that it has dark red color or even pink color.
6 Common Fluids That Can Leak from Your Car, and How to Diagnose Them ... you can tell if the leak is power steering fluid (reddish or light brown, from the front of the car) versus auto ...