Hello, I would like to flush the auto trans fluid on a 90 740 I just bought. I am missing the owners manual. What kind of trans fluid do I put in it.
Thanks
Dennis

Look in thefaq's,,But I believe is the same as the 240's dextron 3
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!965 NSU Prinz,1958&9 VW Beetles,1972 Renault R10,1970 Fiat 850,1972 Chevy Nova,straight 6 3 spd.topped out at115mph,1982 VW Rabbit,1987 Ford Econoline Straight 6 Supervan,445,472 miles before it flamed up!1989 Ford Taurus Wagon 3.0V6,took 18"of snow to s

Welcome Dennis

as it seems you're new to the Brickboard, and maybe to Volvo.
If you want to flush your AT, not just change the ATF, you'll need more than the quantity it holds.
As I'm not good in lecturing, let me just suggest that you use the 700 series board rather than the 300. Also in FAQ and older posts you'll find tons of info about a tranny flush.

Good luck with your new brick.
Neil.

You could use Mobil 1 ATF sythetic, a lot more expensive but it last longer so it is a trade of.
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EJO now a 1994 940T 190K; ex '65 123S; ex '75 245; and ex '81 242GT; also Chrysler 2002 T&C and 2006 MINI Cooper

For your 1990 (and all models from '84-on), you're supposed to use Dexron. Dexron, Dexron-II, -III, etc., are all just successive generations based on new standards at the time -- use whatever is the current iteration.

By the way, for any readers with a pre-'84 car, you're supposed to use Type F instead of Dexron.

As for suggestions, I've used synthetic ATFs (as long as they're compatible with the above types) for about ten years, and won't use the regular stuff anymore. It's more expensive, but so is a transmission; and the synthetics last longer before they discolor (a sign of breaking down), so I'm convinced it's worth it. But that's me. At least use the right type.

Regards,

I have a 92 740 and I used Coastal Dextron III (store brand).
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93' 240 Classic Wagon 220K & 92' 740 Wagon Regina/Rex 90K

Hey, Thanks for all of the great info, one more question. How many qaurts does it hold?
Thanks
Dennis

Total Capacity (including Torque Converter) is given as 7.4 qt.

I'd suggest flushing with 10 or 12 qt. on a car with unknown history. Use the flushing method described in the 700/900 FAQ forum. (Don't try to drop the pan. It's no longer recommended by Volvo.)

Find the 700/900 FAQ using the --select shortcut-- menu button at top right corner.
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Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.