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rbrowning · 09-28-2010, 07:01 PM

I had two new Fords and both did the same thing. After about 8-900 miles the MPG went up about 1. After about 2K miles it went up about about 1 more MPG. I figured the first step was friction being reduced due to machined surfaces smoothing out after rubbing together. Why the second step, I have no idea, but I saw it twice and a friend reported the same thing. I didn't switch to synthetic oil until after 3K miles.

09-28-2010, 07:01 PM	#3 (permalink)
rbrowning EcoModding Apprentice Join Date: Nov 2009 Location: Michigan Posts: 111 Thanks: 10 Thanked 20 Times in 13 Posts	Watch each tank's MPG I had two new Fords and both did the same thing. After about 8-900 miles the MPG went up about 1. After about 2K miles it went up about about 1 more MPG. I figured the first step was friction being reduced due to machined surfaces smoothing out after rubbing together. Why the second step, I have no idea, but I saw it twice and a friend reported the same thing. I didn't switch to synthetic oil until after 3K miles.