. I thought this would help. 
Cold romps
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Postmaster
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Cold romps
Is the major cause of cold romps engine oil viscosity? I am currently running rotella 15w40. It was around 20 degrees this morning and I had to restart it two times. I do have a big hole in my ebp tube but have the exhaust port plugged until I can get it fixed. I don't know if this would make a difference. Thanks for any input.
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From: IL, USA
Even just switching to a different 15w-40 will help if it's only dropping to the 20s. My trucks (9 PSDs) don't romp with Valvoline Premium Blue 15w-40 or Mobil Delvac 15w-40 like they did with Rotella 15w-40.
5w-40 Synthetic is even better. No romps in below zero temps for me with Valvoline Premium Blue Extreme 5w-40 Synthetic. Super smooth on start up.
If I couldn't find the Valvoline I'd go with the Mobil Synthetic.
Valvoline and Mobil use full synthetic base stocks in their 5w-40s.
5w-40 Synthetic is even better. No romps in below zero temps for me with Valvoline Premium Blue Extreme 5w-40 Synthetic. Super smooth on start up.
If I couldn't find the Valvoline I'd go with the Mobil Synthetic.
Valvoline and Mobil use full synthetic base stocks in their 5w-40s.
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From: Middle Tennessee
People using 5w-40 for their rumps nowadays Rick?
What is it, a light coat?
What is it, a light coat?
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From: Blairsville,Ga
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I'm not really up on these cold starting issues with diesel. This is my first winter so don't be too hard on me. I ran synthetic on a new f150 and after 50k miles it developed a bad leak and I attributed it to using synthetic oil. I've always heard not to use synthetics on a high millage vehicle. I'm at 165k now. Thanks for the suggestions.
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Someone mentioned the IPR. I can say that when I switched out my IPR I haven't romped since and it ran alot smoother while warming up. I do believe that 5w-40 syn helps as well because I did that last winter...but when I changed my IPR (running 15w-40) and it made a difference at start-up, I became convinced that the 5w-40 just gave my (bad) IPR enough relief to make it seem like the oil fixed the issue. Maybe not true...but in my case I believe the IPR was at least part of my problem.
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i found a letter from ford that said that is a characteristic of the 7.3 they said go to a different oil and plug in the block heater when it is below 30 degrees F and also let GP run for 2 min to fully heat cylinders
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After reading all your posts, I think I know what the problem is:
1. I have a hole in my ebp port
2. I have a plug in it.
3. I not using the right weight of oil.
HAHAHA.......
No, seriously you guys have given me some good info......Thanks!!!
1. I have a hole in my ebp port
2. I have a plug in it.
3. I not using the right weight of oil.
HAHAHA.......
No, seriously you guys have given me some good info......Thanks!!!