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Old 03-20-2007, 01:49 PM   #2
bmussatti
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Patrick, it looks like "marketing" to me, since Mobil 1 does not have a 5W40 for cars. These links may help you decide:

http://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_Turbo_Diesel_Truck_5W-40.aspx

http://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_0W-40.aspx
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