DD15 engine eating one gallon of oil for every 5000-6000 mile, Please advise.. :(

Feed that kitty. Give her a drink now and then.

Just for giggles, check that oil filler cap. I actually lost 4 gallons on one pull to a loose cap one time.

Sample that oil. Let's look for metal and coolant etc inside of it.

 

780 000. Head was of four weeks ago. I had liner change. One had a problem. And I changed all injectors. The oil is thick in that pipe. Like not a lot just thick. And no smoke after 5 min. Only had this issue when it's cold. Maybe over fill it. Not sure

 

you said the head was off. valve job(replacement of valves, guides, seals ) was done on head?

 

Yes. Everything.

 

It is oil. Not smoke. So the oil is not going inside of the area where is explosion. So it's not burning that all. Also only doing for 5 min. Than is finish. No smoke nothing. Than stop for long time until truck seating for over an hour. Miracle issue

 

Just add the oil, it is easy enough to do. I have this problem with my one truck and a rough terrain crane also. Cheaper than throwing money on turbo swapping etc.

 

Ok. hopfully make it next three month. You know November nd December is here

 

ok. don't do anything with engine. I guess engine needs a little time to brake-in new installed parts . drive 10k-20k m and keep monitoring the oil level. That oil you see in the pipe comes out from combustion chamber. And it happens when engine is cold. Could be possible the mechanic did not change the oil rings on pistons ?

 

turbo swapping ? he has oil in egr cooler not in after turbo pipe or in turbo compressor area.

 

He said that had had the turbo swapped: `` I let them replace the turbo with guaranty this will fixed engine burning oil is the MUST, they promisse ....''