Ochaiks Report post Posted September 19, 2019 Hi Forum folks, I have a 2010 Ford Edge Ltd. It has done about 80,000 miles. Last week, coolant began to mix in the engine oil. Engine does not overheat. Coolant level keeps going down. No oil in coolant but lots of coolant in oil. What could be wrong? Share this post Link to post Share on other sites
akirby Report post Posted September 19, 2019 The water pump has failed which is leaking coolant into the engine. Do a search for water pump and you'll see lots and lots of topics already posted. It's not a simple repair and the engine may have to be replaced. It's a 10 yr old vehicle - was the coolant ever changed? 2 Share this post Link to post Share on other sites
1004ron Report post Posted September 19, 2019 1 hour ago, Ochaiks said: Hi Forum folks, I have a 2010 Ford Edge Ltd. It has done about 80,000 miles. Last week, coolant began to mix in the engine oil. Engine does not overheat. Coolant level keeps going down. No oil in coolant but lots of coolant in oil. What could be wrong? Not sure if you tried the search function? https://www.google.com/search?q=https%3A%2F%2Fwww.fordedgeforum.com+water+pump+internal+leak&rlz=1C1GGRV_enUS769US770&oq=https%3A%2F%2Fwww.fordedgeforum.com+water+pump+internal+leak&aqs=chrome..69i57j69i58.12382j0j8&sourceid=chrome&ie=UTF-8&safe=active&ssui=on 1 Share this post Link to post Share on other sites
Gadgetjq Report post Posted September 19, 2019 (edited) 1 hour ago, Ochaiks said: I have a 2010 Ford Edge Ltd. It has done about 80,000 miles. Last week, coolant began to mix in the engine oil. The 3.5L engine has an internal water pump to keep the engine assembly as small as possible. When seals fail (especially pre 2011 models) coolant is forced into the crankcase. Hopefully you didn't run the engine very much after this happened and damage is minimal. The simplest fix is a water pump replacement which can either be done through the passenger side wheel well or by dropping the entire engine. Both ways are labor intense. Worst case (if you continued to drive) you'll be replacing the engine. This won't be helpful to you but beginning in 2011 Ford redesigned the water pump with double seals and a weep hole that allows coolant to escape outside the engine should a seal fail. Frequent (every 30,000 mile) coolant changes help avoid the problem. Edited September 19, 2019 by Gadgetjq 1 Share this post Link to post Share on other sites
Ochaiks Report post Posted September 19, 2019 Ok. This is great help indeed. Many thanks. Share this post Link to post Share on other sites
Ochaiks Report post Posted September 19, 2019 The coolant was never changed on any schedule or on purpose. The radiator was changed once and, the coolant was replaced then. After that, I keep topping it whenever the level dips Share this post Link to post Share on other sites
