hiya mate. i had a simular prob, changed my pollen filter and then i regulary cleaned every single window with mr muscle window cleaner with news paper. the windows hardly steam up now. could be diffrent for you but you never know till you tried it. that mr muscle works a treat, i cleaned the car every 1-2 weeks a good old rinse then wash with autoglym then dried with a chamois cloth then vacumed car then windows and dash. cars nice and clean.
hope that helps.
Sharki
