Transmission fluid smell

[pjpvi]

I have a 2005 E350 6.0 PSD Sportsmobile 4x4 van with about 36000 miles. After much research, I opted to do my own transmission fluid flush using the warm the tranny and drain from the pan and return line process & replaced the outboard filter with a WIX 57702 (did not drop the pan and do the internal filter). Every thing went well. I replaced with the Amsoil fluid that states Mercon SP compatible. I kept track of the outgoing fluid and replacement fluid quantity.

Ever since I flushed it, I notice that the tranny feels smoother which is great, but I get a bad transmission fluid smell when I decelerate and very bad when I come to a stop. I've checked and double checked the fluid level and all appears to be fine. I thought it was a burnt smell at first, but opened a new bottle of fluid to compare and the smell is the same as the new (kind of bad).

I have no leaks anywhere that I can see.

I'm also now getting a rotten egg smell every now and then (blamed the dog the first time, but wasn't him) which I do not know it is related to the other smell.

I do not have a tranny temp guage, so unfortunately I can't monitor that. I've posted this over on DieselStop forum as well, but figured I'd see if anyone here has experienced the same smell.

Any ideas appreciated? I am completely stumped.

Thanks -
Phil

[Greg In Austin]

Correct tranny fluid used?

...maybe it is time for a scan guage to check that temp...

[pjpvi]

The Amsoil ATF says Mercon SP compatible. I know there is a bit of controversy over using anything other than Mercon SP in these transmissions.

I have my scanguage sitting on my desk ready to send back in for the upgrade just so I can monitor transmission temps. What is normal operating temperature for the transmission?

Thanks -
Phil

[EMrider]

Originally Posted by pjpvi

The Amsoil ATF says Mercon SP compatible. I know there is a bit of controversy over using anything other than Mercon SP in these transmissions.

I have my scanguage sitting on my desk ready to send back in for the upgrade just so I can monitor transmission temps. What is normal operating temperature for the transmission?

Thanks -
Phil

There have been a few interesting threads on the general topic of tranny operating temps. The 'normal' range seems to be 160-220deg per the scangauge. About 18 months ago, Amsoil modified their ATF formula to make it compatible with Mercon SP. Before this change, their ATF was not recommended for the torqueshifts. I've been using the 'new' Amsoil ATF without incident for the past 15k miles. The switch did seem to reduce my operating temps by 10-15deg.
R