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Ford Mustang AOD transmission oil change

cferrellcferrell Member Posts: 3
How often do I have to change the oil in an automatic overdrive (AOD) transmission?


  • euphoniumeuphonium Great Northwest, West of the Cascades.Member Posts: 3,425
    If non synthetic transmission oil, look and sniff the transmission dip stick at around 30,000 intervals.* If the oil is Mercon V, semi synthetic, you can run it longer. When the car shudders on a slight acceleration up a slight grade, change it.

    Remember to also change the oil in the torque converter and filter in the transmission.

    *Discern the quality of the oil by detecting whether or not it is "burned" = Sniff test.
    The color should be close to when it was new. When it smells and looks bad, change it.
  • cferrellcferrell Member Posts: 3
    Thanks for answering my question euphonium.
  • explorerx4explorerx4 North Central OHMember Posts: 17,912
    what year mustang do you have?
    i still have the original fluid in my '91, although low mileage.
    2020 Ford Explorer XLT, 91 Mustang GT vert
  • euphoniumeuphonium Great Northwest, West of the Cascades.Member Posts: 3,425
    transmission cooler. It is an item that I believe has enabled our AOD to go 146,000 without an overhaul. :)
  • cferrellcferrell Member Posts: 3
    The car belongs to a friend of mine but I believe it's an '85. I don't know if he's changed the oil previous to this. It's still running good though. It is amazing to me that after so many miles - it should be over 100K - this Mustang has required minor repairs. It'll be nice to compare this tranny to the one with the electronic controls introduced in '91.
  • explorerx4explorerx4 North Central OHMember Posts: 17,912
    if the fluid is still pink, it is probably ok.
    of course i never said i liked how it shifts. ;)
    2020 Ford Explorer XLT, 91 Mustang GT vert
  • merrelmerrel Member Posts: 45
    I just purchased a 2005 V6 Mustang coupe. 44k miles and in AAAAA1 condition. I spent $2000 changing this and that under the hood, plus new tires. Lots of things replaced that probably did NOT need to. However, I am 72 and try very hard to avoid highway breakdowns. There is NO dip-stick and I need to know when I should drain & refill new tranny oil. I gave some online service a $5 donation to answer that and never got a reply. Also, I find every aftermarket company that sells interior chrome trim to be total thieves as to what they charge. $70, $80 $90 for shinny covers to put on the radio buttons????? Nuts!!! If you know when I should change the tranny oil, I would greatly appreciate a reply on line. Thank you.
  • justinlustjustinlust Member Posts: 9
    I have a 86 f150 4x4 with an aod trans I purchased a used trans and it wont shift into R or N only drive even in R ort N seems to be stuck in drive even thogh ithe shifter moves. any one out there that can help me?
  • miles16miles16 Member Posts: 4
    iwold say every 30,000 miles,or when u check it if it dirty then i would change it.
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