2015 6.7 cummins, have I been doing it wrong? 5-40 M1 TDT

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Was at a farm supply store local to us, had 5 gallon pails Mystik JT8 "synthetic" 10W40, finding that as a good compromise for our so far mild avg 32*F Chicago winter.
 
Originally Posted by kschachn
Originally Posted by SEBZX79
Some nice results on high intervals.

https://youtu.be/cxuGCy66KJM

I actually watched that entire video and I'm not sure I have any idea what he was trying to say.


He said "back to the subject" - after that I got lost.
 
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