I've bought a 2009 Escape I4 2.5. I was not really thinking in terms of better mileage with this. I had a 1995 Taurus that I ran nothing but synthetic in it. I have around 124,000 miles on it. I have had not one problem with the engine. It doesn't use oil. I haven't had to change the timing belt. So I just attributed this to using synthetic faithfully. This is the reason I asked.
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Originally Posted by theoldwizard You definitely need to run at least 500-1000 miles to get the rings seated.
Personally, I would just wait until the first oil change. BTW, don't expect to see big mileage gains. Mine was barely noticeable. |