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1994 7.3 Zero Oil Pressure

 
  #16  
Old 02-11-2019, 04:53 PM
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Originally Posted by parkland View Post
what kind of oil was in it? I currently have half 15w40 half straight 40 and its been just under or over 40 below here lately, and no issues but I do plug in the block heater.

maybe something is wrong with your filter ? Maybe change oil and filter before anything else. I'd assume just about any 15w40 would work fine
Yup good call.
New filter is on my front seat.
I've seen a few sucked apart...usually the orange Fram.
I have a NAPA filter on it now. Will look inside it, like I do all oil filters I take off.
Also -40f!?
Feel for you!!!
 
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Old 02-11-2019, 05:08 PM
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Originally Posted by fuelhog450 View Post
Yup good call.
New filter is on my front seat.
I've seen a few sucked apart...usually the orange Fram.
I have a NAPA filter on it now. Will look inside it, like I do all oil filters I take off.
Also -40f!?
Feel for you!!!
it couldn't be more than a week ago I saw a video of a bunch of filters cut apart, those orange fram filters with the black grip on them were the worst there was. The best was napa gold.

and yes -40. Got a new block heater though and fires up instantly as long as its plugged in a few hours. Oil pressure a second or 2 after firing, zero issues I can tell of
 
  #18  
Old 02-12-2019, 08:05 AM
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Originally Posted by fuelhog450 View Post
Also I'm reconsidering my choice of Rotella 15-40 for winter oil!
i switched from 15-40 to 10-30 in my diesels. they start a lot easier in winter, and do not have any issues in summer.
my 2014 6.2 engine uses 5-20 semi synthetic.
 
  #19  
Old 02-12-2019, 10:25 AM
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We've been at or below -30c here for 3 weeks, I run rotella t6 5w40 full synthetic and have never had an issue starting. plug the old girl in and even on the one morning of -45c she fired right up on the second crank. I would never run conventional oil are these temps.

Glad you got her lubed up.
 
  #20  
Old 02-13-2019, 01:26 AM
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What's wrong with conventional oil? I've always used conventional oil and sometimes even some straight 40 mixed with 15w40 or I'll use 15w40 and top up with 40 weight.
If the block is warm to the touch from the block heater, I don't see the issue.
I've never had an oil pump failure or anything like that. Engines have all been in good condition as well when I got rid of them.
 
  #21  
Old 02-13-2019, 07:49 AM
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Originally Posted by parkland View Post
What's wrong with conventional oil? I've always used conventional oil and sometimes even some straight 40 mixed with 15w40 or I'll use 15w40 and top up with 40 weight.
If the block is warm to the touch from the block heater, I don't see the issue.
I've never had an oil pump failure or anything like that. Engines have all been in good condition as well when I got rid of them.
Nothing's wrong with it but whenyour in the bush with no where to plug in I'd rather have easy starting with a thinner synthetic than conventional oil. Go start your truck at -40 without a block heater and 15 weight, I just did it last week, let me know how it goes.

 
  #22  
Old 02-13-2019, 09:06 AM
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nothing is wrong with conventional oil, that is all i use in everything except for the 2014 6.2 engine. i just switched from 15-40 to 10-30 for easier starting in winter.
 
  #23  
Old 02-15-2019, 12:44 AM
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A while back when Blackstone published those old comparison charts and synthetics showed no real reduction of wear, I thought screw that. Obviously there is a ton of advertising money for synthetic oil.
the only value in synthetic to me seems to be starting if you're not plugged in.
 

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