Where is that written down?
thats exacly what i said dave, an the guy told me its because it all down to the type of journey you do e.g long distance whitch will self clean the DPF or short distance like to an from work were the engine doesn't get warm enough t self clean the DPF.
and another thing i found out is YOU SHOULD ONLY USE QUANTUM LONGLIFE III 0W30 IN THE 170 FR, WHITCH I WAS TOLD BY QUANTUM THEMSELVES,
I WAS SUPPLIED WITH QUANTUM PLATINUM 5W40 BY A SEAT DEALER TO SERVICE MY CAR, EVEN THOUGH IT SAYS ITS SUITABLE FOR ENGINES FITTED WITH DPF WHEN YOU READ THE LABEL ON THE BACK IT SAYS I QUOTE " VW,AUDI,SEAT AND SKODA VEHICLES FITTED WITH DPF REQUIRES QUANTUM LONGLIFE III 0W30.
SO ECAUSE OF AN INCOMPETANT DEALER ITS AIDED TO MY CAR GOING TITS UP BIG TIME.
LETS BE HONEST YOU EXPECT TO GET THE CORRECT OIL FOR YOUR CAR WHEN YOU'VE GIVE THEM YOUR CHASSIS NUMBER AN REG.
I AM NOT HAPPY AT ALL. IT JUST SEEMS TO GET WORSE