You don't want them to run too cool. Running too cool causes more bore wear. It does not get hot enough to evaporate any moisture out of the oil which causes sludge. It also let's fuel past the rings where it contaminates the oil faster than an engine that's running at proper temp.
If it's cold and all the oil has ran off the cylinders compression will read low. I would get some oil in there to seal the rings and get it fired up before I deemed it dead.
Different oil brands and weights do change the consumption in these engines. Mine has always used a at every 700 miles. I put rotella synthetic 5w-40 in it once and that was a mistake. It burned that oil so fast that I could not keep up with it. I was buying whatever oil the gas stations had...
Got it in. Since our Ford Dealer wont even talk to you if your car is over 10 years old I had PepBoys bring a pump out. Seemed to fit ok. Hopefully it lasts longer than a week since its Chinese.
Driving to work I had yet another disaster. My water pump. Stupid thing only lasted 32 years! What a piece of junk! :) Anyway the new pump came with 2 new bolts. I seem to remember something about the original bolts hitting a timing gear. No instructions in the box so where do the new bolts go?
15000 miles on the air filter may be too much. Replace it. My wife's Toyota seemed sluggish when I drove it last week. Only had 9k on this one. I put it in 11-18!
Update: truck sat 36 hours. Started right up this morning and ran fine. Ran @ lunch and when I went home. All I can figure is that it sucked air and it took a few days to get out? Odd because I have ran out of fuel,switched tanks and it was fine. Never has it acted this weird after sucking some...
I guess that's possible. I have 2 filters inline one being a large water trap and then the stock 6.9 filter. Both filters have less than 3k on them. It runs fine once running. I didn't drive it today. I will see if it starts tomorrow.
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