Can I remove discoloration on the plastic parts on my Philips chopper?

*  Most stains can be easily removed in the dishwasher or by washing up in warm water with dishwashing liquid
*  If the stains are difficult to remove, try using some cooking oil
>1. Apply some drops of cooking oil on a dish towel or a piece of paper kitchen towel and rub the stains
>2. Then clean the parts again in the dishwasher or by hand in warm water with some dishwashing liquid