Hate to hijack but i just got my passat back today with my rawtek installed. Did you all move back to just regular diesel oil? Like a rotella from the old A4 days? I have a few more changes with total quartz 507 but just for future reference...
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I’m using Mobil 1 TDT 5W-40. After extensive research I determined this is the oil I should use.
My reasons are the Mobil 1 TDT is thinner at operating temp (100C) than other (Rotella, Delo, Valvoline 5W-40). It is pretty close to the 507 spec viscosity. The 5W-30 is on the thick side of 5W-30 at operating temp. (And Mobil 1 TDT is on the thin side of 5W-40.
Other reason is the Mobil 1 TDT has a lot of Zinc, and Phosporus compared to other brands of oil. You can see this on Mobil’s website.
It is readily available at Wal-Mart and like $24 per gallon, came out to $14 with rebate recently.
Mobil Delvac ESP 5W-40 was my second choice. I couldn’t find the zinc and phosporus levels, and it is another $12 per gallon.
I have a some Mobil ESP 5w-30 (507 Oil) left over and will run this in the winter. I’ll do some oil analysis on these oils too.