Engine Cooling problem
2001 Other Kia Models 4 cyl Manual 150000 miles

Hi, I
have a 2001 Kia 2.7D workhorse. I have noticed oil in the radiator. The oil is thick and has formed a sludge. What is the reason for this

Are there any quick test that I can perform to diagnose the proble as I have limited cash - just recently purchased the vehicle.