Changing transmission fluid?

2004 FORD RANGER
150,000 MILES • AUTOMATIC
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OPIEDOG
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This was my husband’s truck and he passed away. The transmission fluid has never been changed. Was wondering what to do about it
May 21, 2026 at 1:52 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
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I’m very sorry for your loss. If the truck is shifting normally and there are no transmission warning signs, I would recommend doing a basic transmission service, not a power flush.

Use MERCON V ATF in the automatic transmission. Do not use regular old MERCON unless the bottle specifically says it meets MERCON V specification.

Here is a video that can help you.

https://www.youtube.com/watch?v=HJdcWI6m3J4

Please go over this guide and get back to me.
May 22, 2026 at 1:19 AM
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OPIEDOG
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Thank you so so much!!
May 22, 2026 at 8:09 PM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,354 POSTS
You are welcome :)
May 22, 2026 at 8:10 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.