What ATF to use? New to 928s
03-17-2020, 12:12 PM
#17
Rennlist Member
Dex 3 or 4 is what you should use. It's safe, cheap, and it works perfectly in our cars. Go for a conventional of your favorite brand and you will be fine.
The same fluid is also used in the power steering system so you could give that a flush too if you feel the need for it.
The same fluid is also used in the power steering system so you could give that a flush too if you feel the need for it.
03-17-2020, 09:19 PM
#19
Rennlist Member
I've been using Mobil 1 synthetic ATF ever since I replaced the B3 clutch/piston assy (reverse gear) and the B2 band along with a pump re-seal. No issues and I can stock one fluid for 928 trans and PS as well as the trans in my F150 (Mercon V). No issues, readily available at about $10/qt.
03-18-2020, 07:16 PM
#20
Under the Lift
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I have used Mobil 1 synthetic since I bought the car in 99 with 70K miles. Then the transmission failed at 280K miles, so I'm not sure that was a good idea.
03-18-2020, 09:12 PM
#21
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__________________
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
03-18-2020, 11:05 PM
#23
Rennlist Member
12-15-2022, 03:57 PM
#25
Well, quite an interesting post.
I bought my 1984 928 two years ago with about 71K miles in Connecticut (I live in New Mexico). I had it checked and was pronounced to represent "...a Fair example of a 1984 Porsche 928S Coupe Classic Vehicle" by the appraisers I hired to check it. It had a damp smell from being outside with a leaky roof (odor controlled, leak corrected); the console needing replacing; tires had about 10K miles but were over 10 years old so I replaced them; paint and interior in fair shape; and the car looked beautiful on Ruby Red. CARFAX told the story of a hardly used car that moved from New York to Florida and back to New York with periodic maintenance at Porsche/Mercedes shops. Nothing seemed fishy.
The major problem was lack of maintenance paperwork. My local Porsche dealer has not been of any help to trace maintenance done by Porsche dealers in New York and Florida. In fact, when trying to have maintenance done I was told that such old car cannot be serviced by them and the nearest place they knew was in Colorado, about 1,500 miles away.
Which brings me to this post. I decided to change the oil myself, had a local mechanic do some electrical work that fixed most of the issues and disconnected the alarm that was going off randomly, but since I don't know if the transmission fluid was ever changed I am now thinking of doing it myself. Caveat: I am probably no good at mechanics.
So, the Porsche 928 Automatic Transmission A22 Troubleshooting Guide that came with the car indicates AT fluid to be "ATF Dexron B" , which had sperm whale ingredients now banned. It recommends a "new ATF quality with the additive Lubrizol 3216 C" (page 7 of the aforementioned guide), and it emphasizes (and I quote) that the " following fluids are not suitable for our automatic transmissions! ":
ATF Dexron II, ATF Dexron II C, ATF Dexron II D, ATF Type A Suffix A.
Any comments? Which Dexron should I use?
Many thanks for your input; it has been enlightening to read this post.
I bought my 1984 928 two years ago with about 71K miles in Connecticut (I live in New Mexico). I had it checked and was pronounced to represent "...a Fair example of a 1984 Porsche 928S Coupe Classic Vehicle" by the appraisers I hired to check it. It had a damp smell from being outside with a leaky roof (odor controlled, leak corrected); the console needing replacing; tires had about 10K miles but were over 10 years old so I replaced them; paint and interior in fair shape; and the car looked beautiful on Ruby Red. CARFAX told the story of a hardly used car that moved from New York to Florida and back to New York with periodic maintenance at Porsche/Mercedes shops. Nothing seemed fishy.
The major problem was lack of maintenance paperwork. My local Porsche dealer has not been of any help to trace maintenance done by Porsche dealers in New York and Florida. In fact, when trying to have maintenance done I was told that such old car cannot be serviced by them and the nearest place they knew was in Colorado, about 1,500 miles away.
Which brings me to this post. I decided to change the oil myself, had a local mechanic do some electrical work that fixed most of the issues and disconnected the alarm that was going off randomly, but since I don't know if the transmission fluid was ever changed I am now thinking of doing it myself. Caveat: I am probably no good at mechanics.
So, the Porsche 928 Automatic Transmission A22 Troubleshooting Guide that came with the car indicates AT fluid to be "ATF Dexron B" , which had sperm whale ingredients now banned. It recommends a "new ATF quality with the additive Lubrizol 3216 C" (page 7 of the aforementioned guide), and it emphasizes (and I quote) that the " following fluids are not suitable for our automatic transmissions! ":
ATF Dexron II, ATF Dexron II C, ATF Dexron II D, ATF Type A Suffix A.
Any comments? Which Dexron should I use?
Many thanks for your input; it has been enlightening to read this post.
Last edited by Wrinkles44; 12-15-2022 at 08:07 PM.
12-15-2022, 10:55 PM
#26
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Well, quite an interesting post.
I bought my 1984 928 two years ago with about 71K miles in Connecticut (I live in New Mexico). I had it checked and was pronounced to represent "...a Fair example of a 1984 Porsche 928S Coupe Classic Vehicle" by the appraisers I hired to check it. It had a damp smell from being outside with a leaky roof (odor controlled, leak corrected); the console needing replacing; tires had about 10K miles but were over 10 years old so I replaced them; paint and interior in fair shape; and the car looked beautiful on Ruby Red. CARFAX told the story of a hardly used car that moved from New York to Florida and back to New York with periodic maintenance at Porsche/Mercedes shops. Nothing seemed fishy.
The major problem was lack of maintenance paperwork. My local Porsche dealer has not been of any help to trace maintenance done by Porsche dealers in New York and Florida. In fact, when trying to have maintenance done I was told that such old car cannot be serviced by them and the nearest place they knew was in Colorado, about 1,500 miles away.
Which brings me to this post. I decided to change the oil myself, had a local mechanic do some electrical work that fixed most of the issues and disconnected the alarm that was going off randomly, but since I don't know if the transmission fluid was ever changed I am now thinking of doing it myself. Caveat: I am probably no good at mechanics.
So, the Porsche 928 Automatic Transmission A22 Troubleshooting Guide that came with the car indicates AT fluid to be "ATF Dexron B" , which had sperm whale ingredients now banned. It recommends a "new ATF quality with the additive Lubrizol 3216 C" (page 7 of the aforementioned guide), and it emphasizes (and I quote) that the " following fluids are not suitable for our automatic transmissions! ":
ATF Dexron II, ATF Dexron II C, ATF Dexron II D, ATF Type A Suffix A.
Any comments? Which Dexron should I use?
Many thanks for your input; it has been enlightening to read this post.
I bought my 1984 928 two years ago with about 71K miles in Connecticut (I live in New Mexico). I had it checked and was pronounced to represent "...a Fair example of a 1984 Porsche 928S Coupe Classic Vehicle" by the appraisers I hired to check it. It had a damp smell from being outside with a leaky roof (odor controlled, leak corrected); the console needing replacing; tires had about 10K miles but were over 10 years old so I replaced them; paint and interior in fair shape; and the car looked beautiful on Ruby Red. CARFAX told the story of a hardly used car that moved from New York to Florida and back to New York with periodic maintenance at Porsche/Mercedes shops. Nothing seemed fishy.
The major problem was lack of maintenance paperwork. My local Porsche dealer has not been of any help to trace maintenance done by Porsche dealers in New York and Florida. In fact, when trying to have maintenance done I was told that such old car cannot be serviced by them and the nearest place they knew was in Colorado, about 1,500 miles away.
Which brings me to this post. I decided to change the oil myself, had a local mechanic do some electrical work that fixed most of the issues and disconnected the alarm that was going off randomly, but since I don't know if the transmission fluid was ever changed I am now thinking of doing it myself. Caveat: I am probably no good at mechanics.
So, the Porsche 928 Automatic Transmission A22 Troubleshooting Guide that came with the car indicates AT fluid to be "ATF Dexron B" , which had sperm whale ingredients now banned. It recommends a "new ATF quality with the additive Lubrizol 3216 C" (page 7 of the aforementioned guide), and it emphasizes (and I quote) that the " following fluids are not suitable for our automatic transmissions! ":
ATF Dexron II, ATF Dexron II C, ATF Dexron II D, ATF Type A Suffix A.
Any comments? Which Dexron should I use?
Many thanks for your input; it has been enlightening to read this post.
Still the best ATF I've tried.
Pep Boys has switched to only doing service work and no longer has retail sales (at least here, in So. Cal.)
However you can still buy this fluid on Ebay.
Look for "Proline Dextron III-Mercon"
12-15-2022, 10:56 PM
#27
Rennlist
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Well, quite an interesting post.
I bought my 1984 928 two years ago with about 71K miles in Connecticut (I live in New Mexico). I had it checked and was pronounced to represent "...a Fair example of a 1984 Porsche 928S Coupe Classic Vehicle" by the appraisers I hired to check it. It had a damp smell from being outside with a leaky roof (odor controlled, leak corrected); the console needing replacing; tires had about 10K miles but were over 10 years old so I replaced them; paint and interior in fair shape; and the car looked beautiful on Ruby Red. CARFAX told the story of a hardly used car that moved from New York to Florida and back to New York with periodic maintenance at Porsche/Mercedes shops. Nothing seemed fishy.
The major problem was lack of maintenance paperwork. My local Porsche dealer has not been of any help to trace maintenance done by Porsche dealers in New York and Florida. In fact, when trying to have maintenance done I was told that such old car cannot be serviced by them and the nearest place they knew was in Colorado, about 1,500 miles away.
Which brings me to this post. I decided to change the oil myself, had a local mechanic do some electrical work that fixed most of the issues and disconnected the alarm that was going off randomly, but since I don't know if the transmission fluid was ever changed I am now thinking of doing it myself. Caveat: I am probably no good at mechanics.
So, the Porsche 928 Automatic Transmission A22 Troubleshooting Guide that came with the car indicates AT fluid to be "ATF Dexron B" , which had sperm whale ingredients now banned. It recommends a "new ATF quality with the additive Lubrizol 3216 C" (page 7 of the aforementioned guide), and it emphasizes (and I quote) that the " following fluids are not suitable for our automatic transmissions! ":
ATF Dexron II, ATF Dexron II C, ATF Dexron II D, ATF Type A Suffix A.
Any comments? Which Dexron should I use?
Many thanks for your input; it has been enlightening to read this post.
I bought my 1984 928 two years ago with about 71K miles in Connecticut (I live in New Mexico). I had it checked and was pronounced to represent "...a Fair example of a 1984 Porsche 928S Coupe Classic Vehicle" by the appraisers I hired to check it. It had a damp smell from being outside with a leaky roof (odor controlled, leak corrected); the console needing replacing; tires had about 10K miles but were over 10 years old so I replaced them; paint and interior in fair shape; and the car looked beautiful on Ruby Red. CARFAX told the story of a hardly used car that moved from New York to Florida and back to New York with periodic maintenance at Porsche/Mercedes shops. Nothing seemed fishy.
The major problem was lack of maintenance paperwork. My local Porsche dealer has not been of any help to trace maintenance done by Porsche dealers in New York and Florida. In fact, when trying to have maintenance done I was told that such old car cannot be serviced by them and the nearest place they knew was in Colorado, about 1,500 miles away.
Which brings me to this post. I decided to change the oil myself, had a local mechanic do some electrical work that fixed most of the issues and disconnected the alarm that was going off randomly, but since I don't know if the transmission fluid was ever changed I am now thinking of doing it myself. Caveat: I am probably no good at mechanics.
So, the Porsche 928 Automatic Transmission A22 Troubleshooting Guide that came with the car indicates AT fluid to be "ATF Dexron B" , which had sperm whale ingredients now banned. It recommends a "new ATF quality with the additive Lubrizol 3216 C" (page 7 of the aforementioned guide), and it emphasizes (and I quote) that the " following fluids are not suitable for our automatic transmissions! ":
ATF Dexron II, ATF Dexron II C, ATF Dexron II D, ATF Type A Suffix A.
Any comments? Which Dexron should I use?
Many thanks for your input; it has been enlightening to read this post.
Still the best ATF I've tried.
Pep Boys has switched to only doing service work and no longer has retail sales (at least here, in So. Cal.)
However you can still buy this fluid on Ebay.
Look for "Proline Dextron III-Mercon"
12-17-2022, 08:35 PM
#30
Rennlist Member
I'll be using the Proline, thanks !
8 QTS on it's way from Ebay
8 QTS on it's way from Ebay
Last edited by Babado; 12-19-2022 at 06:22 PM.