2004 C70 AW55-50SN Trans... Huh? What???

landl4u2 · Post by **landl4u2** » 23 Nov 2014, 19:24

Any idea what the letters and numbers represent? Asian... 5 sp maybe. 50% failure rate when long way from home???

Post by **precopster** » 24 Nov 2014, 01:09

It's Aisin not Asian.

It breaks down on 85% of 00-02 models and around 25% of post '02 models with improper fluid change intervals. The average of those 2 figures are 55%

The 50 stands for 50% of people will unknowingly purchase a vehicle with a faulty transmission because they didn't allow it to fully warm up during the test drive.

Post by **JRL** » 24 Nov 2014, 05:22

and yes, it's a 5 speed

Post by **abscate** » 24 Nov 2014, 05:31

OP - the lore here on MVS is it is NOT a good idea to get these transmissions flushed by anyone. It is much better to replace the fluid over a period of a few months with a drain and fill protocol, removing about 3 quarts each time and replacing with new.

There are several threads on this for your reading pleasure.

landl4u2 · Post by **landl4u2** » 24 Nov 2014, 14:33

Great! Thanks... and I promise - no more attempts at humor.

Post by **FLXC90** » 24 Nov 2014, 18:07

The humor is fine, so long as it is clearly humor, Snark is a skill elevated by certain respected members of the forum. It all boils down to the serious question posed also. As you surmised Aisin-Warner 4 speed automatic. Replaced the 50-42 series in earlier models. So you were about 50% correct.

And do the "girls" like the humor as well as the car?

Edit-duh, what I meant was 55-50 is 5 speed replacement for 50-42 4 speed .

Post by **scot850** » 24 Nov 2014, 22:05

I believe this is a 5 speed trans as JRL said not a 4 speed.

Neil.

Post by **BEJinFbk** » 25 Nov 2014, 01:35

Affirm - 5 speed.