Discussion
Automatic transmission oil has both lubricating and cooling properties. If you’ve been driving the car normally up to the point of gear oil change with no undue problems then I would guess there was more than 2 litres in there.
Otherwise, it would throw a fault code or trigger limp home mode at the very least.
I think you should take it to a specialist Transmission shop and have them pin point the leak then go from there regarding any follow up from the dealership. They’ll take no notice of you saying there must be a leak somewhere. However if you can state the precise failure and location of the leak by a bona fide transmission specialist, you are better armed for a hopefully helpful response.
Regarding any limp home caused by swirl flaps or anything else, you’ll need the fault codes reading. They’ll tell you which areas of the car are causing the errors. Good luck.
Otherwise, it would throw a fault code or trigger limp home mode at the very least.
I think you should take it to a specialist Transmission shop and have them pin point the leak then go from there regarding any follow up from the dealership. They’ll take no notice of you saying there must be a leak somewhere. However if you can state the precise failure and location of the leak by a bona fide transmission specialist, you are better armed for a hopefully helpful response.
Regarding any limp home caused by swirl flaps or anything else, you’ll need the fault codes reading. They’ll tell you which areas of the car are causing the errors. Good luck.
Edited by carlingofblack on Sunday 14th June 16:09
I too would be surprised if an auto box requiring 8 litres would work at all with just 2.5 litres in it.
As has been said, the torque converter will retain a large quantity of fluid which can't be drained without taking the torque converter off - and that requires the gearbox separating from the engine.
As an example, the ZF4HP22 on the RRC takes 9.1 litres total from dry. BUT that is for a completely empty gearbox and torque converter & the workshop manual contains a warning that for servicing fluid must only be added to the marked level on the dipstick.
IIRC the last time I did a filter & fluid change on mine I got something in the order of 5 litres out. (Which according to Ashcroft's is about right)
There is also likely to be some remaining in the box & in the gearbox oil cooler (if fitted). Replaced seals & gaskets on mine last year & there was a surprising quantity still in it - just glad I'd put big cardboard sheets down to protect the floor!
As has been said, the torque converter will retain a large quantity of fluid which can't be drained without taking the torque converter off - and that requires the gearbox separating from the engine.
As an example, the ZF4HP22 on the RRC takes 9.1 litres total from dry. BUT that is for a completely empty gearbox and torque converter & the workshop manual contains a warning that for servicing fluid must only be added to the marked level on the dipstick.
IIRC the last time I did a filter & fluid change on mine I got something in the order of 5 litres out. (Which according to Ashcroft's is about right)
There is also likely to be some remaining in the box & in the gearbox oil cooler (if fitted). Replaced seals & gaskets on mine last year & there was a surprising quantity still in it - just glad I'd put big cardboard sheets down to protect the floor!
Edited by paintman on Sunday 14th June 23:05
He took 2 and a half litres out and put 8 in.... dealer now worried he has overfilled it and may have caused the swirl flap issue due to too much oil pressure. Im dropping car back to dealer tomorrow to investigate. Mechanic been at the business 30 years surely he couldnt have made this mistake!!! Im hoping dealer says warranty wont cover it now as its the mechanics mishap that may have caused this.
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