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Old 10-07-2009, 01:25 PM
glc glc is offline
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Join Date: Dec 2006
Location: Joplin MO
Vehicle: 2003 Ford F150
Posts: 10,308
Mobil 1 is not a true synthetic by definition - it uses GP 3 petroleum base stocks. The EP version has a LOT more synthetic additives. There are VERY FEW true synthetics left any more due to the skyrocketing cost of PAO base stocks.
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2003 F150XL 4.2 short cab/bed 4x2 5 speed manual 3.55 LS
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