mdrake67

On 1/30/2021 at 3:52 PM, Vmac3 said:

Some oil consumption is normal between oil changes. How much oil is disappearing? From what it sounds like you have a part failure somewhere. 

If no visible leaks are found you could check the air compressor. If you see oil in the air tanks then that would be a good place to start. Could also be piston rings, valve guides/seals or the turbo. If you see oil in the coolant then that can indicate a bad engine oil cooler. Usually the exhaust aftertreatment will clean things up for a while but that would lead to damaging the particulate filter. Hope this helps.

V

 

 

So driving it for 3-4 hrs straight at hwy speed it will use about a gallon of oil, however if you drive it locally with lots of idle time you can run it all day and maybe lose a half a gallon

I have a 2012 Mack CXU613 with MP7 and it has a drinking problem.  I have oil disappearing, no visible leaks, nothing on the ground under it while it sits but if you don't keep a close eye on it you will run out of oil.  Its not burning it or at least not showing it out the stacks.  Anybody had this issue or know what to even start checking.