I have a Triton v10 engine in my vehicle
I have oil in my coolant but no coolant in the oil.
What could be the problem?
If it has an engine oil cooler, that is most likely the problem, a faulty oil cooler, some are made into the radiator, others have heater hoses running to a remote oil cooler, and a few I have seen are where the oil filter screws on, the oil cooler has a leak into the coolant side. The reason no coolant is in the oil is because it is a high pressure leak, oil pressure is always higher than coolant pressure when running, so if the leak only happens at 20-25psi or above, coolant will never get into the oil.
Other than that it could be a head gasket as suggested but is rare.
If the oil cooler is in the Radiator, obvious because it has big oil lines running into one of the end tanks, pull it and have it leak tested at a radiator shop.
You will rarely see water leaking through a small hole as will oil. Water has surface tension and does not “wet” metal as oil does. Early attempts to use pure ethylene glycol as a high-boiling point coolant were very troublesome due to such leaking. Smaller amounts in predominately water work fine.