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I filled with 4.5 quarts M1 5W30 and 4 quarts M1 15W50. The end result is about 10W40.
The last oil change at dealer, they put in M1 5W40. The one before that, they used M1 15W50. The fuel consumptions were about the same with either oil.
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'00 E430 Brilliant Silver/Ash
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