Volvo AWD S80 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 11/2005 S80 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

auto trans fluid change S80 99

Lacking a manual and too cheap to shell out 100's of $ for one, I am hoping someone could advise me on how to change the fluid/filter on my auto trans. in an S80-T6. What trans do I have, what type of fluid is best (Dextron III?), how much does it hold? I've done this lots of times on other vehicles (always had a manual) so I am familiar with the steps for this procedure. TIA








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    Re: auto trans fluid change S80 99

    Not sure about the filter on this GM trans, but indeed a flush is best. A case of 12 quarts should be enough for a relatively new car. But the total fill should be monitored at about 8-10 qts, while flushing.

    The best ATF is Amsoil Universal Synthetic ATF. Easily exceeds ALL the ATF standards. Not only makes your car shift better, the lubricating qualities provide protection, total resistance to oxidation/thermal breakdown and cooler running that just plain will make your very expensive transmission last a long time. Doesn't make sense NOT to use synthetic ATF.








    •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

      Re: auto trans fluid change ALL

      > Doesn't make

      > sense NOT to use synthetic ATF.

      To you, maybe, the Amsoil ATF seller. But to the buyer, who realizes

      that buying more insurance than one needs or can use, or overpaying for

      the right insurance, can be wasteful, there's another side to this.

      > the lubricating qualities provide protection,

      That's great logic for synthetic ENGINE OIL, but ATF needs to be "grabby".

      Frictionless ATF would definitely increase the operating temps in an AT

      that ever shifted gears, and probably cause the AT to rapidly

      self-destruct.

      > total resistance to

      > oxidation/thermal breakdown

      ...let's see, the owner's manual says that's not a problem with regular

      ATF, and you're saying that synthetic ATF will fix that problem? Exposure

      to high temps, a primary rationale for using synthetic engine oil, esp

      in a turbocharged engine, simply does not occur in a healthy AT used in

      anything approaching normal service.

      > and cooler running

      If the ATF is too hot, that's not the ATF's fault; nor can changing to a

      more (most) expensive ATF lower an AT's anomalously-high operating

      temperature.

      The [more-]expensive solution you're hawking is way beyond what Volvo, GM,

      Aisin-Warner, and many others say is way more than sufficient. Sounds like

      overkill to me... (Ditto for expensive 'special' "power-flushing" machines

      some folks tout -- most ATs are perfectly capable of pumping their own ATF,

      you know... they do it all the time...)

      If properly maintaining your car makes you feel good, does over-

      maintaining it make you feel better? (And, more importantly, will it

      keep the elephants from trampling the crops?)

      If Dexron ATF can enable your AT to outlast the rest of your car (and it

      can), why pay more?

      I recommend people consider giving their wallets and our environment a

      break (by letting Dexron work for years at a time for you)...

      - Dave; '95 854T, 111K mi, Dexron chgd once @ 61K











      •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

        Re: ATF change... ECU reset? ALL

        I just changed my ATF for the first time in its life, this weekend with Mobil 1 ATF. I have an 850R with 111K miles. The shift pattern of the car changed quite noticably. It is much smoother on the upshift but it seems less willing to down shift if I step on it, almost like it is always in econo mode instead of sport mode(which it never is). I recall having read other posts in the past about resetting the ECU for the new fluid with different proporties and characteristics. Is this necessary? Will it help? How do you do it?

        Steve J








      •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

        Re: auto trans fluid change ALL

        Dave,

        I'll say it again: petroleum oil based Dexron meeting the MININUM specifications does NOT last, and certainly using synthetic ATF is NOT overkill. Even healthy AT's push the temp limit of petroleum ATF.

        Synthetics ARE NOT wasteful, they can be and are made from renewable feedstocks. Petroleum oil isn't coming back. Synthetic ATF, again LASTS MUCH LONGER, so it doesn't need to be DUMPED as frequently.

        ATF does need to be "grabby" as you state, but not TOO grabby for street cars. For example, SuperShift Racing ATF has NO friction modifiers and has short, sharp shifts with maximum torque transfer. I never said Universal ATF was "frictionless" (where did you come up with that?), but the synthetic base does provide better lubricating qualities for improved MPG (better for the environment), longer gear and clutch life.

        I have seen petroleum ATF self destruct in an otherwise healthy transmission, that same transmission with synthetic ATF lasted another 195,000 miles with no ATF change. Dexron specifications are not that hard to meet, but some cars push up against those specs – very hard.









  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    Re: auto trans fluid change S80 99

    Dwight, I've done this. Used Mobil 1 Synthetic ATF; About 10 qts. Removed

    top cooler hose at radiator. Squeeze plastic retainer and pull. Fluid comes out from radiator. You can clamp plastic hose over fitting on radiator. The direction of flow is different from S70 so don't confuse those instructions with this. Because the level of fluid is supposed to be more critical on the S80, I marked the dipstick before (scratched it) with the car overnite cool and not running as a check to see where I ended up. Sneak up on the final fill so as not to overfill.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.