3 hours ago, e-Roottoot said:

From the factory now the VW Engines get VW 508 / 509.  0w 20 FS IV.

Someone at the back wasn’t paying attention!  Yes, you’re right that new VW engines get “longlife 4”, a low viscosity fuel economy oil based on ACEA C5 but the spec is 508 00/509 00. 

Unlike before, the new oil is not backwards compatible - the new oil can not go in older engines.  To protect against this the 0W-20 oil is dyed blue (the blue dye mixed with pale amber oil actually makes it look green) to prevent misapplication and it also contains a tracer element, so that it can be determined after the fact if an engine had the correct oil in it.  Both these factors are built in to the VW spec so are mandatory for any oil claiming 508 00/509 00.

I read your 00 bit and more often than not type it but seeing as you had just explained i never bothered.

 

Nobody said that VW508 00 /  509 00 was backward compatible. 

 

VW508 00 / 509 00 is the spec from VW for Fixed or Variable and VW502 00 can still be used in the TSI engines for fixed servicing.

 

Dealership Staff & Call Centre / help line staff still need to get their heads around what has been used since 2018/19 so that they can tell customers.

 

Bottom screen grab has the fuller story, 

the emissions...

 

Edited 18 September, 20205 yr by e-Roottoot

I was just adding extra info with the backwards/dye/tracer thing, for interest.

 

On the “00” thing, I have seen more than one person get confused between 508 00/509 00 and 508 88/509 99, hence why making the point.  It is an unlikely mix up to make though since the latter spec is aimed at poor fuel quality countries.