I have been losing a little coolant (nothing that sent warning signs) but i have noticed that my engine has been running at a little higher temp then when i first bought the car. They determined it when they went to check the coolant they couldn't read it because it was full of sludge at first they just said I would need a flush. I took it to a different mechanic and when removing the raditor cap there was sludge on it and the hose were get soft due to the oil leakage. They said they have seen worse but seeing how i have low mileage(38000) on my car, it is why it hasnt shown before this time. But i should have it fixed right away before my engine goes.