i have just taken my 6 months old car to bmw bodyshop for some work on the the front bumper (some stupid female with her shopping trolly)
£220 to repair
anyway the chap who looked at the car asked me how i cleaned the car
hose it down with cold water
wash with car shampoo sponge in hot water
rinse with hose
then dry of with shammy, polish if needed
no he said hose down cold water
use 2 buckets of cold water 1 to wash the other to rinse the cloth with wash your car without any shampoo and not with a sponge
if you wash with hot water this is what causes the swirl marks on your car it is melting the wax you have on your car( in other words wasting money)
and only use microfibre cloths to wash and dry.
wax every 6-8 weeks
wow tried it and it looks unreal melbourne red.i have always looked after my cars washing it every week, wax every every 2 weeks but i must admit he was right.
thanks for reading