The water often over-flowed and our clothes seemed to have soapy residue on them. The technician who came to look at the machine advised us that we were using the wrong washing powder.
So that you do not make the same mistake, always go for Persil washing powder. It may be more expensive than some of the other brands but it is made to wash with low suds and therefore, best suited for your washing machine!
The other two brands I tried: Daia and Fab are terrible for the washing machine and I guess are best for hand washing only.
Softners: we like Soflan.
You may find that because of the humidity some of your clothes do not dry properly and leave a musty, mouldy smell. To counter this use a rinse in your washing machine like the one by Dettol.
We also tumble dry our towels and bed linen as this really helps get them completely dry.
Some great tips via the link below on preventing mould attacking your leather bags in humid climate:
Silica gel to control humidity
Please share any of your discoveries on detergents, mould-prevention etc in KL. Thank you!