Thermostat?
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Post Fiend
Joined: Jun 2003
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Thermostat?
Question: started in 36 degrees ambient temperature and left *FOR EVER* what is the highest temp you would expect to see on the digital readout for oil temp? I'll give you a hint: I'm disappointed and cold.
Lead Driver
Joined: Nov 2005
Posts: 5,239
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From: Kaysville Utah
I started my truck and let it idle while I finished breakfast yesterday. When I got in the EGTs were only 198° . So doubt the oil temp could get any higher than that and would be something lower than that. There is not much heat generated at a lean idle. Now if you start to move the truck and get a little richer fuel mix, Then your EGTS jump up and the coolant and oil would warm up.
Senior User
Joined: Sep 2011
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From: Colorado
Total WAG - oil temp 120 F. ??? Diesels don't generate much heat idling.
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Post Fiend
Joined: Jun 2003
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145 degrees. I kind of figured that diesels (this is my first) would be slow to warm given the lean idle but sheesh - can't they put a cotton-picking thermostat in these things that will get them up to operating temp? I can just see it now: when I finnaly 'ditch' it on the Interstate given one of Indiana's finer weather days I'm going to freeze to death.
That an all of a sudden I seem to have developed a nasty (low amplitude) vibration at idle that seems like the motor is sitting solid against some other part of the truck. I'm starting to get disappointed for $60K.
That an all of a sudden I seem to have developed a nasty (low amplitude) vibration at idle that seems like the motor is sitting solid against some other part of the truck. I'm starting to get disappointed for $60K.
Freshman User
Joined: Dec 2004
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You could do the high idle mod to get hotter temps faster.
Also, I seem to remember an old post about a loose motor mount(or something else loose in the engine compartment) that was causing a weird vibration noise. I memory serves, there were a few members that had that issue.
Also, I seem to remember an old post about a loose motor mount(or something else loose in the engine compartment) that was causing a weird vibration noise. I memory serves, there were a few members that had that issue.
Super Moderator
Joined: Aug 2008
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From: Frederick, MD
You won't freeze. I started mine in -1F before staying at a hotel in Kansas. Not plugged in either.
within a couple miles It was pushing big heat. got to work it to produce the heat.
within a couple miles It was pushing big heat. got to work it to produce the heat.
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Postmaster
Joined: Feb 2006
Posts: 3,201
Likes: 4
From: waynesville, mo.
145 degrees. I kind of figured that diesels (this is my first) would be slow to warm given the lean idle but sheesh - can't they put a cotton-picking thermostat in these things that will get them up to operating temp? I can just see it now: when I finnaly 'ditch' it on the Interstate given one of Indiana's finer weather days I'm going to freeze to death.
That an all of a sudden I seem to have developed a nasty (low amplitude) vibration at idle that seems like the motor is sitting solid against some other part of the truck. I'm starting to get disappointed for $60K.
That an all of a sudden I seem to have developed a nasty (low amplitude) vibration at idle that seems like the motor is sitting solid against some other part of the truck. I'm starting to get disappointed for $60K.
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Post Fiend
Joined: Jun 2003
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Yes guys, driving down the road is just fine. I'm just surprised by how many 'interesting differences' exist between these and gassers.
In all honesty I can't believe it took me so long to come over to the dark side. I wish, I could in a few words share a lifetime's experience with turbocharging/supercharging gas motors and their inherent fragility (even after you put pistons/rods/cranks, the block is still weak) only to finally arrive at a vehicle that has an 'appropriate' amount of torque right from the factory.
In all honesty I can't believe it took me so long to come over to the dark side. I wish, I could in a few words share a lifetime's experience with turbocharging/supercharging gas motors and their inherent fragility (even after you put pistons/rods/cranks, the block is still weak) only to finally arrive at a vehicle that has an 'appropriate' amount of torque right from the factory.
Postmaster
Joined: Feb 2006
Posts: 3,201
Likes: 4
From: waynesville, mo.
Primary and secondary cooling system, 2 each. Because of the radiator issues in the 6.4, the thermostats open at different temperatures to prevent "thermal shock" when a large rush of coolant reaches hot components. Effective for that, but side effect is frozen owners.
Lead Driver
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