Hey you can also visit Esso car wash locations in Singapore and you can also fill gas or petrol from there.

Find All Esso car wash locations here: https://servicecenter-nearme.com/esso-car-wash-singapore-locations-price-opening-hours/

Hi Sophie, thanks for leaving a question. Shell has several 24-hour manual car wash around the country.

You may find out their locations here: https://www.shell.com.sg/motorists/inside-our-stations/shell-car-wash.html