15W50 inferior?

• Subject: 15W50 inferior?
• From: [email protected]
• Date: Mon, 16 Sep 1996 00:55:29 -0400 (EDT)

Quick question...anyone know why the 5w-30 and 10w-30 weights of Mobil 1
Motor Oil carry the API "Starburst" symbol on the front of the bottles and
the 15W-50 does not carry the symbol?  Is that particular grade of oil
(which, BTW is recommended for most temp. ranges for most E36's, according
to the BMW manuals) inferior to the others?

Wondering

Ron Browne
Bowie, MD

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