Changed my oil yesterday only to find my oil looking real dirty and milky. I couldn’t see where my Subaru has been leaking in the garage or on the drive way. I was still like a month out before I needed to change my oil. Yet, my oil light came on and I was super low on oil when I checked it. Hence why I changed it. What could be wrong? Could it be a serious issue?
zipper
If the oil is milky it has water in it. You may have a blowen gasket in the head, you need to have it check by a Top Nocky Mechanic, it will lead to a blowen engine or the engine siezing up. Get it checked NOW, Today do not wait!!!
The Devil
It needs top-end work, either head gasket, or head gasket and cylinder head repair.
John Alden
Older Subaru's tend to blow head gaskets which is indicated by the conditions you noted. Stop driving it as the oil is not going to protect the engine.
thebax2006
Are you changing your oil every 3,000 miles or every 5,000 miles if running synthetic oil? You also need to check the oil level every 1,000 miles between oil changes and keep it topped up. Don't go by any on board oil change reminder. They go too many miles between oil changes. If all the oil came out milky you may have a bad head gasket so go to a mechanic.
regerugged
When you change oil, you should also change the filter. Your question does not say you did.