Oil leak from behind ECM

[pgleavitt]

While towing a 5th wheel,a friend saw oil had covered the front of his trailer. After stopping he realized it was dripping from the drivers side front area behind his ECM. We took off the ecm mounting bracket and out drops a shiny,small plug looking thing.
After further inspection we found a hole that we surmised was for a dip stick location for other application the engine can be used. When we tried to install the plug it dropped in flush with the block and could see remnants of black silicone.
To repair it we set the plug on a metal surface and tapped it with a hammer to enlarge the diameter. After 3 or 4 tries we got it to sit about an 3/16” out of the hole and with a long extension and the correct silicone drove it in flush from above. We then let it setup for a few hours.
He had lost about 1 gallon of motor oil but had good oil pressure while driving. After topping of the oil we then started the engine and no more leak. Or course his 2010 6.7 had just hit the 103,000 miles and out of warranty and all this took place out in the desert where we camp with limited phone service.
Just a guess but we believe it was caused by a restricted crank case breather filter and very lucky the plug had remained behind the ecm bracket.

 

[Newsa]

While towing a 5th wheel,a friend saw oil had covered the front of his trailer. After stopping he realized it was dripping from the drivers side front area behind his ECM. We took off the ecm mounting bracket and out drops a shiny,small plug looking thing.
After further inspection we found a hole that we surmised was for a dip stick location for other application the engine can be used. When we tried to install the plug it dropped in flush with the block and could see remnants of black silicone.
To repair it we set the plug on a metal surface and tapped it with a hammer to enlarge the diameter. After 3 or 4 tries we got it to sit about an 3/16” out of the hole and with a long extension and the correct silicone drove it in flush from above. We then let it setup for a few hours.
He had lost about 1 gallon of motor oil but had good oil pressure while driving. After topping of the oil we then started the engine and no more leak. Or course his 2010 6.7 had just hit the 103,000 miles and out of warranty and all this took place out in the desert where we camp with limited phone service.
Just a guess but we believe it was caused by a restricted crank case breather filter and very lucky the plug had remained behind the ecm bracket.

Did he perform his 67,500 (54 month) service when the reminder/notification apoeared?

Or did he just reset the warning and ignore the service?

I performed mine at 54 months. Even though I had only 40k. It did have oil in it. But probably could have gone another 10-15k before any restriction would have been possible. If your friends dilemma had occurred within the warranty period, and he hadn't done the 67,500 no service, it might have not been covered if that oil leak was really the cause.

 

[pgleavitt]

All of his service and oil changes had been done by the dealer at the prescribed intervals.The leak was caused by what looked like a loose factory plug that was basically glued in with Silicone. My theory about the ccv filter had to do with the steep grades and high rpm’s while towing.