|Rainwater bad for paintwork ?
1. I wash my car with collected rainwater for
conservation reasons. Someone says it harms the
paintwork as rainwater is acidic. I argued that
cars are constantly exposed to rainwater anyway.
What do you think?
2. My instruction manual says do not let wax
get onto the windscreen. However, wash and
wax preparations will inevitably get wax residues
onto the windscreen. Is it necessary to use wash
without wax preparations only for the wind- screen?
1. If the rainwater collected is from a slight shower, then the acid
content would be higher as it would collect the suspended pollutants.
However if the water is from a downpour, the acid content would be lower.
Anyway since you are collecting large amount of water, I do not think there
is a problem and the amount is too small to make any difference.
2. Wax is very difficult to remove from windscreens but most of those
wash and wax car shampoos do not actually contain wax but a chemical
that coats the paintwork and even if that gets on the
glass, the coating is very thin and does not affect visibility. So check the container before use to make
sure that it can be used on glass.