Originally Posted By: wjdell
Pablo I wrote AMSOIL and they want to see evidence, I of course can not give them that. The VW DEO user wants to remain anonymous and I am sure you understand that he would be attacked at certain forums. I am going to Schaeffers as they will rec their S9000 for TDI PD use and Amsoil will not rec DEO. If I can not get great numbers with 507 then I will do something.
Heres a laugh Amsoil said they were not aware of the mediocre performance of their AFL in the PD motors. Yet I have seen their lab show 100 ppm Fe counts on 10k OC's of AFL. I and only few others have posted good UOA's with AFL. Then again many 505.01 users are posting identical performance to AFL, nothing to write home to mom about. My UOA is not worth consideration. My conditions are so optimum.
Amsoil admits this:
Quote:
In response to your inquiry, AFL was formulated specifically to meet VW 505.01 standards so we could offer an oil to VW owners who are under warranty. This is not to say AFL is the best oil we make, since the 505.01 standard is as much a limitation as a minimum specification. It is the same situation for DEO. To meet the CJ-4 specification is a limitation as well. The fact that both of these oils are OEM drain interval oils reflects the compromises required to meet the respective specifications the oils were formulated to satisfy.
Quote:
The two specifications are exclusive. Since DEO requirements are specifically intended to extend the life of particulate filters, VW will have to change their requirements if they choose to equip their diesels with the particulate filter as part of their emissions systems.