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[Field Marshal Dr. Opti]

Can members who know more than me post a link for the correct ATF  (and amount required) for a 2007 2.8T.

The job itself does not look that difficult.

Mrs Opti says drop it at WBAC and run.

[Viral_Jim]

Reg number in here... 

https://whatoildoineed.com/

[BazaJT]

Strikes me Mrs. Opti is talking sense

[Field Marshal Dr. Opti]

Strikes me Mrs. Opti is talking sense

They are offering £1160.....before I arrive.

£xxxx......after they see the car and start finding faults with it.

[biggriffin]

It'll be in the Manual.

[Field Marshal Dr. Opti]

It'll be in the Manual.

Don't think I ever had one.

[biggriffin]

I'm guessing it's fitted with the Asian Warner, gearbox these use a mineral oil, it takes about 7L but you have to drain and fill a few times. It's possible AW-1 or ATF3309

[Field Marshal Dr. Opti]

I'm guessing it's fitted with the Asian Warner, gearbox these use a mineral oil, it takes about 7L but you have to drain and fill a few times. It's possible AW-1 or ATF3309

Drain and fill a few times?......sounds expensive and time consuming.

Why so, BG?

Can't I simply drain out 7 litres of the old crap and refill with 7 litres of the new stuff.

[TheBoy]

You wont get it all out, so you end up mixing significant amounts of old shitty fluid with new, hence having to do a few times as each draining reduces the ratio of the old fluid.

[Field Marshal Dr. Opti]

You wont get it all out, so you end up mixing significant amounts of old shitty fluid with new, hence having to do a few times as each draining reduces the ratio of the old fluid.

Ah....I see. Thanks, TB.

So how much oil is needed to get 7 litres of clean ATF?......or is this not really possible?

[cam.in.head]

the issue is the torque converter . if you drain the sump you drain a percentage of the fluid but none of the torque converter and it holds a lot of fluid . so as the engine is run again the new fluid circulates and replaces the fluid in the torque converter which mixes with the old fluid . every time you drain and refill you get more of the old "mixed in" fluid out !

[Field Marshal Dr. Opti]

the issue is the torque converter . if you drain the sump you drain a percentage of the fluid but none of the torque converter and it holds a lot of fluid . so as the engine is run again the new fluid circulates and replaces the fluid in the torque converter which mixes with the old fluid . every time you drain and refill you get more of the old "mixed in" fluid out !

You learn something new every day.

I thought it would simply be a case of drain the old and refill with new.

[STEMO]

IIRC, over half of the ATF is retained in the torque converter. So you will only drain c.3.5 litres of oil first go.
So....in my understanding....first oil change gives a 50% ratio of old to new, second one gives you 75%, third one gives 87.5% and so on. So 10.5 litres of ATF will, more or less, give you an acceptable ratio.

[TheBoy]

I dont know that particular gearbox, but I'd guess you'd get a little over half out, so end with a 50:50 mix os old and new.  After a 2nd change, that'll be 75:25, and a 3rd, 87.5:12.5 and so on...

Even 50:50 is a marked improvement on 100% old oil.

[TheBoy]

IIRC, over half of the ATF is retained in the torque converter. So you will only drain c.3.5 litres of oil first go.
So....in my understanding....first oil change gives a 50% ratio of old to new, second one gives you 75%, third one gives 87.5% and so on. So 10.5 litres of ATF will, more or less, give you an acceptable ratio.

LOL, snap. Typed at the same time