ACEA 2004 oil sequence terms?

[paul_e320]

I'm not an oil expert -- just trying to be an educated consumer. While reviewing the 2004 ACEA oil sequences, I see the terms RL 140, RL 148, RL 197, RL 206, RL 216 in the Engine Tests section of the sequence paper.

What are these terms and where can I find definitions/values for these as they appear to be kinematic viscosities.

Thanks.

Regards,
paul...

 

[JAG]

Those are reference oils. They are what the oil being tested is compared to in particular tests. They are unknown to us lay-people.

 

[paul_e320]

Quote:

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Those are reference oils. They are what the oil being tested is compared to in particular tests. They are unknown to us lay-people.

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JAG,
Thanks, I'm not surprised that those RL values are a secret, although ACEA did indicate that RL 191 was 15W-40 on the fuel economy test.

Regards,
paul...