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Old 02-10-2013, 10:11 AM   #7
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Join Date: Dec 2012
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Location: Petawawa, Canada
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Originally Posted by incubus625 View Post
You gotta look at it from a cost stand point to. Intake and exhaust may get you maybe 1 mpg more. but the cost for that extra mpg is rediculous. What you could do is replace your tires with Lrr tires when the time comes, switch to 0w-20 motor oil, etc. I dont have the new focus but I have a fiesta. So I do plan on switching to better tires when the time comes.
Is it wise to switch to a lighter oil? Wouldn't ford suggest it if it was safe to run it? The new mazda 3's run it so i am sure if ford thought it was safe they'd run it too. The new mazda3's run the engine on high idle for a bit when you first start it, maybe it has to do with the grade of oil.
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