What is this brass tag?

Posted by Peter Hemken On 2015/9/2 12:51:49

Does anyone know what this is? I am attempting to attach a photo to this post. It says "Warning Use 10-W Motor Oil Only". I found this brass tag in a glove compartment of a 1934 Packard Super Eight that I purchased last year. I don't think it refers to the crankcase oil or to the Bijur chassis oiling system, since they use heavier weight oils. I have no clue what this is and would appreciate hearing from the collective wisdom in this forum.

thanks
Peter Hemken
WDM, IA

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