ATF Dark Reddish Brown, slightly smelly

LeeMajors

New member
Purchased a used 2000 4Runner with 155k mi on it.

Unknown on last ATF flush/change.

Noticed no apparent transmission problems--seemed to shift smoothly throughout the trip. No lurching or anything.

When I went through to check fluid levels, etc., noticed that ATF was brown and smelled slightly weird. Smells kind of like a normal petroleum product, but I'm also unsure of what normal ATF smells like. It blotted brown on a white paper towel, but was dark red on my fingertip. No metal shavings in it that I could tell.

I'm pretty concerned. I want to take it into the dealership to have it flushed, but a lot of reading says that can cause even worse problems.

Should I drain/fill until the fluid looks better over the next few thousand miles/oil changes? Or should I do a flush?

Or did I just majorly **** up and buy myself a tranny overhaul project?
 
Register to hide this ad
Is it the original radiator?

I'm not entirely sure. The fluid isn't frothy or anything.

I actually just ended up doing a passive flush on the ATF and haven't had any problems. After getting out the old fluid it was really just dark brown and not burnt. I haven't noticed any problems with slippage or anything since doing it.

Putting in my B&M Supercooler tomorrow morning.
 

Members online

Forum statistics

Threads
278,313
Messages
3,554,090
Members
248,016
Latest member
Advally Service

Trending content

Back
Top