Fuel Economy is out the window. Used to get 500Km on a Tank and now getting 380Km. The injector washers need to be replaced as I am getting weeping in the valley. The Vehicle doing 200000Km . I don't want to just replace the washers and if one of the injectors are not spraying properly. Van works good only for the puff of unburnt diesel(white smoke) through exhaust when accelerating from stop.
I always use the Liqui Moly purge every 10,000Km and replace filter every 5000Km. Also put the amsoil treatment every other month.
Do you think that the weep leak is what causing that bad mileage?