Good evening...
Okay, here's another oil thread, I'm sorry... I've read all the oil threads and I understand less than ever before.
I'm only seeing mentions of HTHS (High Temperature High Shear), camshaft damage, and pump-nozzle issues there.
I have a
VP TDI ALH with Longlife QG1 oil, with a flexible interval of 15,000 to 50,000 km (timing belt 150,000 km

), and NO spark plugs.
The instruction manual states VW
506.00, but it seems that this specification is no longer available. In the hardware store, I can only find 507.00, which is "backward compatible" with both 506.00 and 506.01.
What is the difference between 506.00 and 506.01, and is the 507.00 now worse for my LL fuel distributor pump TDI than the 506.00, which is no longer available?
Is 5W-30 507.00 now okay, or is there something better that can be done for it?