The oil specified for use in the Volkswagen TDi for current models meets the "API Service CG-4" rating. This mark means that the oil has been tested for use in Diesel (C = compression ignition) engines to meet the requirements of a test level called "G" in a 4-stroke engine. The oil may also have been tested for use engines fueled by gasoline, methanol, propane, or other fuels ignited by a spark plug (S = spark ignition). The "S" ratings (SG, SH, SJ, etc.) have no bearing on the suitability of the oil to protect a Diesel fueled engine from the special demands imposed by the higher compression ratios and the tendency for all diesel engines to place soot in the oil.
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Hallo 1.Disconect lower hose from intercooler and oil (from 0,1 liter or more) (sometimes 1-2 liters) comes out, you should not drive it.(car had probably loose power) Change the turbine, oil and oil filter. do not forget to disconect lower hose and let oil drain out. Otherwise when new turbine is instald, the air flow will **** this oil inside the engine and distroy it. 2.your car is not designed to run without turbine and will not work like normal disel.(SDI). hope it helps Marko