I have 6 quarts of Valvoline Advanced MST 5W40 with that spec but need 2 more quarts of something. Can I use this NAPA oil? https://www.napaonline.com/en/p/NOL...6j_M6VjKCCQy2XAtTsaAtKdEALw_wcB&gclsrc=aw.ds&
505.01 was mandatory for 4.2 twin turbo RS6505.01 is a very specific oil from the 502/505 oils, which made for higher shear engines, in particular, at that time the Pumpe-Duse TDI's, that were prone to cam wear, vs using a regular 502/505.00 oil.
So, I would probably say no.
What about 228.31?use mb 229.5 instead
That's what I was thinking especially when I'm just adding 2 quarts to the 6 quarts of the MST. The specs say it can be used where 505.01 is required even though it doesn't have an approval: https://sharena21.springcm.com/Publ...2d889bd1/3198f1c7-8798-e911-9c25-ac162d889bd1The Napa oil will do fine
That's because no other specification oil was available enough for it, as I believe in Europe, it 506.01 was required, but there's no inventory for that in the USA and not worth to build the inventory for a limited engine, so 505.01 was close enough and VW sold a lot more TDI's to justify it.505.01 was mandatory for 4.2 twin turbo RS6
How have you been measuring it?I used 505.01 oils for the first 100K miles in my Jetta. For the last 207K miles I have been using Mobil 1 TDT. Seems to be working. Oh yeah, no cam wear so far.
The engine runs, very well. Based on other reports of cam wear, what other measurement do I need?How have you been measuring it?
Just interested was all. You said “no camshaft wear” and I was wondering how you determined that. It’s not easy to measure.The engine runs, very well. Based on other reports of cam wear, what other measurement do I need?
It is in a VW PD.Just interested was all. You said “no camshaft wear” and I was wondering how you determined that. It’s not easy to measure.
I'm sure it is, but that would take at least a visual inspection.It is in a VW PD.
If one starts eating a cam it's very visible.