Hello, we have here an Outback Diesel 2015 with 150TKm on the clock. According to my mobile phone (torquepro) he has an ash load of 80%. My friend once told me a while ago that he would answer the filter only when the error ejects. But that seems rather unfavourable to me, especially since this then probably happens during family holidays at night by 1 in pouring rain on the Autostrada in Italy. From when would or did you have the filter cleaned? According to ash value (90% e.g.), na ch Kilometer or according to mood or actually only after warning lamp? Greetings Andi