I thought I would update the thread from my posts of Jan 24. I finally got around to doing a partial CVT fluid change on my IQ which has not been used much over the last year or so. It is approaching 70K miles.
I settled on Castrol Transmax and decided to remove the drain plug, but not the plastic tube - just trying to minimise the risk of things going wrong.
It was couple of months ago towards the end of the summer when I did this first partial change and 650ml came out - so around 10% of the capacity as far as I am aware. Replaced with 650ml and all was well - I did not have any transmission issues before the change, but the transmission did seem smoother 'engaging' and 'disengaging' when driving.
I did a second change about a week ago after driving for a few hundred miles from the 1st change.
This time 600ml came out - it was colder and the car may have been jacked up slightly higher. 600ml went back in (replacement fluid was at the same temperature as that coming out on both occasions) New sealing washers used each time as well.
So far it has been a very simple process if not the most economical way of doing it. I will do another 4 changes over the next few months which if my calculations are correct will be approaching a 50% change overall. Then probably once a year to keep it fresh.
Comparing the fluid extracted 1st and 2nd time - the colour variation is apparent. I am very happy with the transmission performance which is very smooth.
I settled on Castrol Transmax and decided to remove the drain plug, but not the plastic tube - just trying to minimise the risk of things going wrong.
It was couple of months ago towards the end of the summer when I did this first partial change and 650ml came out - so around 10% of the capacity as far as I am aware. Replaced with 650ml and all was well - I did not have any transmission issues before the change, but the transmission did seem smoother 'engaging' and 'disengaging' when driving.
I did a second change about a week ago after driving for a few hundred miles from the 1st change.
This time 600ml came out - it was colder and the car may have been jacked up slightly higher. 600ml went back in (replacement fluid was at the same temperature as that coming out on both occasions) New sealing washers used each time as well.
So far it has been a very simple process if not the most economical way of doing it. I will do another 4 changes over the next few months which if my calculations are correct will be approaching a 50% change overall. Then probably once a year to keep it fresh.
Comparing the fluid extracted 1st and 2nd time - the colour variation is apparent. I am very happy with the transmission performance which is very smooth.
