Hi I have 1.8 8v cavalier MK3 with aw 50-40le auto gearbox.

I need to do an oil change as it's dirty but need to know how much it takes as some sites say 3 l with out filter and some say 6l.

It has to be done via dipstick hole as it a sealed box so only will do a basic change.

Does anyone have this box that can advise.

A rust free car with 96000 from new and original radio cassette.

Thanks

I'm

Edited Tuesday at 07:42 PM1 day by kevin drew

I can see what you are up against as so much conflicting information out there on the type of autoboxes that are available.
If it were me I would clean the exterior of the areas I would be working in (e.g. bottom and side of the box.
Warm the engine up but not too hot as the fluid could scold when being drained.
With a drain tray underneath let the fluid drain into it and try not to lose any as you will have to measure the quantity of old fluid. If there haven't been any leaks then what comes out is what should be in there.

Ensure you have plenty of fluid to fill the box and top up over the next few days.
If you remove the sump or side cover then fit a new filter and gasket(s) and see how it goes after that.
Also examine the fluid for colour and particles (metal, fibre, etc) and if it smells of burnt toast then the fluid has been heated by wear on the clutch plates.