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Own a new sl 500 with 1359 miles. Has been laid up for winter. Does anybody know what type and weight of oil came from factory. Want to switch to Mobil I 15-50 synthetic and change annually, plan to put 4-5k on car each year driving thru april and november.<br>
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I've read some places that breakin with factory oil is preferred for 10K or so before switch. Then again I read on net that MB has been sending cars from factory with synthetic for some time. Any opinions ??
 

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As an owner of a 2000 SL500 also, don't worry, the car's computer system will tell you when the first service is needed. A wrench symbol will appear on the upper mileage display, along with remaining miles before service, when you first turn on the ignition switch. SL500's (depending on how you drive) generally need their first service between 10k - 15k miles. This is when you get your first oil change. Obviously by these numbers Mercedes is using synthetic. The wrench symbol first appeared at about 12k miles on mine.
 
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