Hi guys I just returned from the garage where my car a Audi a4 tdi 170 it was supposed to get a dpf deleted and remap but he said he wouldn't do this as my car was burning oil and had erratic injector corrections he said I was burning oil due to the white smoke coming from back as far as I'm aware my car dose this on startup but once warm it's doesn't smoke anymore and I have Owned the car for 9 months and never had to top up the oil even checking every week if I was burning oil iw old need to top up surely as for the injectors these where replaced by Audi at the last service under the recall any ideas how I can check if I'm burning oil with out a hefty garage bill many thanks Chris