My X5 told me that I was low on oil and need to add 1 quart. Is this included in the service plan? I.e. - do I simply go to the dealer and ask them for a quart of oil?

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2004 Porsche 911 C4S X51, Seal Grey / Black
2006 Porsche Boxster S, Guards Red / Sand Beige
2008 BMW X5 4.8i, Black Sapphire / Saddle Brown
2001 Audi A4 1.8tq, Laser Red / Black, APR Stage 2, H&R Coilovers
2002 Suzuki GSX600 Katana, Yellow