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Discussion Starter #1
what weight oil should i use in the winter i normaly run a 15-40 moble delvac 1500 but the truck runs so hard would 10-13 10-40 be ok i dont know what do you guys run
 

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Discussion Starter #3
On 2005-12-02 17:17, DIXIEDIRT wrote:
90 weight would be fine for winter use lol, go to a 10-w30 weight and you should be ok.


90w ha i dont think so not at single didgets and -0* but seriously i wont hurt anything if i keep running 15w40 or if i switch to 10w30 it wont be to light and what about oils like max life 10w30
 

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Discussion Starter #5
hum never nthought of those isb just strait 40w
 

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Make sure the oil you use is rated for turbocharged DIESEL engines. Not any old oil will do. I run 15W40 Rotella T or Valvoline All fleet almost year around, but my truck does not have to start every day. If you find 0* alot, and can't plug it in, the truck will start much easier with a 10w30 or even a staight 10w oil. One word of caution is 10 wieght oil will be very light if the temp gets too warm outside. Around here the occasional 40* days in winter cause problems, and oil pressure will be low with a straight 10w. Warm days are the drawback to the straight 10w oil. I'd have to look at the temp ratings of the 0w40 to see how it would fare.

Michael
 

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I agree a 5w40 would be you best bet. It will cost a little more seeing how it is a synthetic (although most are a Group III synthetic) but it is a good choice of oil to run year round, and especially good in the winter months.
 

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On 2005-12-02 19:40, MMiller wrote:

I run 15W40 Rotella T or Valvoline All fleet almost year around...

Michael

Myself included in this...I just changed oil today at 30*F and the new 15W40 poured like honey! I have never ran anything but 15W40 Rotella, run it year round even when the temps dip to better than -20*F.

steved
 

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On 2005-12-03 19:36, steved wrote:


Myself included in this...I just changed oil today at 30*F and the new 15W40 poured like honey! I have never ran anything but 15W40 Rotella, run it year round even when the temps dip to better than -20*F.

steved

:withstupid: thats all ive ever run in mine and all my buddies with CTD's/powerstrokes run this also. never had a problem, and i change it every 5K whether it needs it or not :rotfl:
 

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Discussion Starter #10
On 2005-12-03 19:50, RamAford wrote:


:withstupid: thats all ive ever run in mine and all my buddies with CTD's/powerstrokes run this also. never had a problem, and i change it every 5K whether it needs it or not :rotfl:

thanks i think i will leave it alone and keep running 15w40oh i do change every 5000 no matter what
 

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In a colder climate when the truck will see several cold starts the 5w40 is certailny the way to go. If I lived in a warmer climate or my truck was less of a daily driver (meaning several cold starts a day) I would run 15w40 year round.

I don't think you are harming your engine much by running 15w40 in the cold (we all know how well built these motors are) but it would sure like the 5w40 much better.
 
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