Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - **synthetic or not?
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Old 06-13-2013, 12:38 PM   #3
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What I Drive: 2007 infra-red zx3

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If you want to extend you oil change intervals then synthetic is the way to go. If you are going to change it at 3-5000 mile intervals then any quality dino oil will do just fine. I personally use the Motorcraft semi syn and change at 5000 miles and my engine is spotless inside after 114000 miles on my '03
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