Here's a verbatim answer fome Amsoil Tech services regarding the VW 505.01 issue.
"Lance, These are European specs and do not directly apply to VW cars operated in North America. Our diesel oils exceed 505.00 and based on the current API ratings they surpass 505.01 as well.Volkswagen's oil specification for its diesel engines is called VW 505.00. Very few motor oils in North
America carry the VW 505.00 rating. Volkswagen calls for API CD rated oil for the North American
market. The problem is that API CD is so out of date that the API forbids the CD rating from being used.
Volkswagen has not been quick to upgrade its oil specification because of a new rating system being
developed by ACEA in Europe. Volkswagen has now upgraded its oil for diesel engines and aligned it to
the new European specs. The old VW 505.00 specification never had a direct crossover to any API oil
ratings. With Volkswagen's new upgraded diesel oil specification with a direct ACEA rating, there will now
be a direct crossover to an API oil rating. It will be at least a year before the new ACEA B4-98 will have an
API equivalent, probably API CH-4. The following article can be found at
www.lubrizol.com in the June
Newsline. ACEA Issues New Engine Oil Specifications Test protocols include new and updated tests.
ACEA has issued upgrades to its specifications for gasoline and diesel passenger car engine oils, and
heavy-duty diesel engine oils. First allowable use of the sequences was March 1, 1998. By March 1, 1999,
all new claims to meet ACEA sequences must conform to the 1998 issue. Claims against ACEA 96
sequences will not be permitted after March 1, 2000. The specifications include both increased test
severity and updated technical requirements with no intent to increase severity. An example of this latter
change is the replacement of the OM 364A engine test with the OM 364LA. This engine, which is the inte
r-cooled/low emissions version of the OM 364 engine, is used to evaluate bore polish and piston deposits.
For passenger car diesel engine oils, the following changes were made: ?B1-98 ? Additional parameters
were added to the OM 602A test, and the M111E fuel-economy test was added. ?B2-98 and B3-98 ?
Additional parameters were added to the OM 602A test. ?B4-98 ? This is a new category for oils used in
direct injection diesel engines requiring special quality oils. The category includes a new engine test, the
VW TDI. This four-cylinder , 1.9 liter direct-injection diesel engine is turbocharged and inter-cooled. If you call VW Customer assistance, they will advise you to use a CG-4 rated oil. Our AMSOIL Diesel oils not only meet CG-4 but they far exceed these ratings and even surpass the newer CH-4 and CI-4Thank you, Ed KellermanManager, Amsoil Tech Services Every attempt has been made to ensure that the information provided in this e-mail correspondence is accurate and reliable. However, AMSOIL INC. makes no warranty, guarantee, or promise (express or implied) concerning the content or accuracy of our e-mail response, as it is based solely upon the information provided to us by the e-mail sender.-----Original Message-----
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NameLance Duchesneau
Zip79606
[email protected]
Comments2004 Volkswagen PD diesel engines, requiring VW specification 505.01 motor oil. At this point, it seems Amsoil products only meet specification 505.00."
I can't figure out what they're saying.