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Old Jan 7, 2014 | 09:54 PM
  #16  
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tvsjr
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Not that cold down here in DFW... lows in the teens. But my 09 5.4 with 136K on the clock fires right up.
 
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Old Jan 7, 2014 | 10:17 PM
  #17  
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Originally Posted by RISUPERCREWMAN
Do yourself & your engine a favor & change oil to a high quality full syn oil!
I'll be darned. I never considered that and I see you're absolutely correct.

Study of various 5W-30 oils, see page 6 for cold viscosity comparisons. It's not just a small difference, it's a huge difference!

http://www.amsoil.com/lit/g3115.pdf
 
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Old Jan 7, 2014 | 10:26 PM
  #18  
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my wife's EB has been starting just fine. It has sat outside all day in -10 to -15 temps and fires right up without any extra noises. At night it sits in the garage and Mon morning it was -20 outside and right at 0 in the garage and the truck started right up.
 
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Old Jan 7, 2014 | 10:47 PM
  #19  
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Ya, by comparison mine started right up at -4F this morning, but yesterday at -18F it was slow cranking and took a bit to fire. I just had a fresh oil change a few days earlier at the Ford dealership so the oil is as thick as it can possibly be.
 
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