Most Fords since about 2002 or so use 5W 20 engine oil. I would stick with the 5W but maybe go up to 5W30 now that it has that many miles on it. I would also switch to 3000 mile oil changes (or less). The 2009 3.0 has variable timing and uses oil pressure to activate it - I would definitely not switch to 10W40 or 15W40 in a variable valve timing vehicle.
It if truly has low oil pressure you are going to want to correct that issue as the oil pressure is used for the cam phazers and the chain tensioners. A loose timing chain flopping around inside the timing chain cover can get real serious real fast.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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