'04 LS Duratec Transmission Questions.....

I just bought an '04 LS Duratec.

It has 40K miles on it.

What type of trans does this car have?
What is the suggested service interval for this trans?

Is dropping pan and changing the filter sufficient?

Hi, Not to be sarcastic, BUT, Did you get an owners manual with the car?....All that info is in it,,,,,,CLAY...

Hi, Not to be sarcastic, BUT, Did you get an owners manual with the car?....All that info is in it,,,,,,CLAY...

No, but downloaded one from Ford site. Manual is very vague and refers to a specific transmission, 4R100. Do not know what type the car has?

It shows a 30K mile interval for trans fluid changes on the 4R100, and inspect only for all other types.

I am also looking for real world experience, not just "what the book says". The book has been proven wrong before.

The transmission is an AX4N

Service recommendation is 50-60k miles, no power flushes.

The transmission is an AX4N

Service recommendation is 50-60k miles, no power flushes.


Yah, but if you want it to last, you'll be smart and use a "real world" reccomendation of every 30k miles. NO POWER FLUSH. If you drop the pan and do fluid and filter every 30k, and PUT A TRANSMISSION COOLER on, you should have many happy miles ahead of you.

Hi, What web site were you on? The 4R100 trans is in various ford trucks, The posts to this thread so far are very sound bits of advice, These comments are from REAL World experience.....See Ya, Clay....

Yah, but if you want it to last, you'll be smart and use a "real world" reccomendation of every 30k miles. NO POWER FLUSH. If you drop the pan and do fluid and filter every 30k, and PUT A TRANSMISSION COOLER on, you should have many happy miles ahead of you.

Thanks for the response.

Any suggestions where to buy the trans cooler? What type?

Did Ford offer one as an option?

ford doesn't offer a trans cooler

best place to buy one is www.summitracing.com or www.jegs.com

pretty much any small one will work fine.