2007 Doblo Mk 2 in White paint finish. She enjoys her occasional wash with Turtle wax car wash, however before the bucket water becomes too dirty, the water turns milky white. Also seen in the water being squeezed from the sponge. Never seen anything like this before when washing cars. Is washing thining the paint? Is there a treatment to help prevent further 'thining'? Any advice much appreciated. ATB.

Has it had the scratch covering product applied over time?

Not in our 6 year ownership. Only 'extra' is a chalwyn valve due to her being an ex oil refinery service van. Can it be chemical attack?

Id be tempted to post in the carcare section

State the paint code

Its probably on 500s..puntos etc too

Charlie