Вот, что сказано в Эльзе по поводу инервала замены масла, в частности класса масел 506.00:
Oil change service / vehicles 2000 >
Perform an oil change service for:
Vehicles with long-life type service (PR number QG1) which is not using a new engine oil conforming to VW specification 503 00 (petrol engine) or VW specification 506 00 (diesel engine).
Vehicles with long-life type service which because of the inefficient driving style or the extreme conditions, have service intervals of approx. 15 000 km or 1 year.
Vehicles with "time/distance dependent service" (PR numberQG0 or QG2):
vehicles with petrol engine
vehicles with diesel engine
Note for diesel engines (SDI / TDI):
In countries with elevated sulphur content in diesel fuel, engine oil must be changed every 7,500 km. Affected countries with elevated sulphur content: see "Inspection and Service Handbook".
Надеюсь этим сообщением поставить точку в жарких спорах по поводу интервалов замены масла в РФ.