Specific Gravity test used by VW to exclude me from warranty claim
TDI owners beware. I recently experiences a deceptive test from VW when I had my 2013 Passat TDI towed in for a new High Pressure Fuel Pump. (HPFP) My car is under extended warranty but they excluded my case because of diesel fuel contamination using Specific Gravity as their proof. I sent a sample of my fuel to FOI Labs in Vancouver. Their report was clear. No contamination! No moisture, no gasoline and 10% biodiesel. VW would not divulge the standard of their test model. I had to hire a lawyer to finally get restitution.