Oil mixing with coolant in reservoir

My mechanical exp would be 1. head gasket alowing oil to mix with the coolant. ( The head would have to be removed to confirm this ) Hope this helps.. TBT 5150

 

Not really sure why they replaced a water pump. Oil/water mixed together tells me somewhere where the water jacket is seperated from the oil by a gasket, a gasket is either blown or you had a warped head.

You can tell if you look at the Oil dipstick. You will see water since oil/water do not mix well.

 

Injector tube or injector cup leaking allowing it to mix

 

i'm figureing out that there are TONS of place for oil and water to mix. not just the usual head gasket.

and the transmission is another addition to those tons of things.

 

I would say you had coolant in your oil also and you spun a bearing. The level may have gone down due to it burning the water off after repairs.

Was there any signs of water in oil? What engine is this?

 

on all Volvo engines injector sleeves and heat exchanger (pass side of cyl block) are weak.

 

on all Volvo engines injector sleeves and heat exchanger (pass side of cyl block) are weak.

 

I also want to ask if anyone can help, I have been giving a truck to repair (TGX 26.460) with a fault of oil mixing with coolant. And as a mechanic, I have replaced a new oil cooler and start the the truck but the coolant keeps returning out from the reservoir and also with much oil coming out from the coolant radiator which freaks me up and don't know what else to do. Any help pls!