Transmission fluid stinks

[wheelstands]

I hate to ask but I have a 1987 turbo Regal with 41000 miles on it. I have service records indicating that transmission maintenance has been done regularly however the transmission fluid smells bad. Not so much burnt but just stronger than regular fluid. I changed the fluid, and it still stinks. I figure it may have been hot at some point, but it drives and shifts flawlessly. I don't notice any slip and the shifts are smooth. Does the smell indicate severe damage or just some previous clutch heat?

 

[THensley]

I would not think the nose would be vary good tool to call a trans fluid bad, if it is working OK and is not black.
Today ATF could have some very odd additives to meat new manufacture demands and EPA standers.

 

[Chuck Leeper]

The easiest/cheap method: Do an oil sample test.

Standard Oil Analysis | Blackstone Laboratories

Learn about the standard analysis, the baseline testing we do on most samples. The standard analysis is all most people need to answer their questions.

www.blackstone-labs.com

Also, hold the farts until after you do the smell test.