Originally Posted By: Quattro Pete
Originally Posted By: UG_Passat
VW had also, 503.00/506.00/506.01 specification which was a 0w30 oil, with a "lower" HTHS spec, 2.9-3.5
Are these still active VW specs? Afton Handbook does not list them anymore for some reason.
Yes, but I believe the only engines that spec 503/506 are the VW 2.5 R5 TDI and the VW 5.0 V10 TDI.
VW 503.00
Long-life gasoline engine oil for VW cars with WIV (system for longer service intervals). Also meets ACEA A1, SAE 0W-30 or 5W-30 specification.
VW 506.00
These oils are suitable for diesel engines with extended service intervals of up to 50,000km / 2 years. Not for use on engines with a single injector pump. Oil change is indicated by the electronic service indicator. Viscosity is SAE 0W30.
VW 506.01
These oils are especially for "Pumpe-Düse" (unit injector or "PD" engines) running on extended service intervals (30,000 - 50,000km / 24 months). Oil change is indicated by the electronic service indicator.
Motul sells a Specific 503/506 0w30 (TBN of about 10, HTHS of about 3.1) and says:
-Fuel Economy Engine Oil specifically designed for extended drain intervals (WIV) of new VAG (VW,AUDI, SEAT and SKODA) Gasoline and Diesel engines from MY2000.
-For VW, AUDI, SEAT and SKODA Turbo Diesel Unit Injector engines and fixed drain intervals at 15000 km an approved VW 505 01 product such as MOTUL Specific 505 01 502 00 505 00 5W-40 is preferred.