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Oil leaked dry now 2006 Impala is running hot
Hello! I inherited a 2006 Impala from my mother when she passed away, only 80,000 miles and my step dad is like a car maintenance freak - everything is done on time and fixes were taken care of immediately. The car still gets regular oil changes and maintenance since I've had it as well.
Last week on my way to work a very brief message flashed on my dashboard with one single "ding" - I had just enough time to see the top line of the message "Oil pressure low" but the message was gone before I could register the second line of the message. I parked at work, 2 minutes away, and let the car cool before checking the dipstick - which was dry! I am still 700+ miles from an oil change. A co-worker and I picked up 4 quarts of oil and I put 2 in to take the car to the shop on the way home until I was told it would be this week before they could look at it. The drive home was uneventful, no more messages.
I checked the oil again the next morning and the dipstick showed oil up to the third dot. So I started the car and all was fine up until the exact same spot as the day before and I got that super quick message again. (making a right turn at about 15 miles an hour) This time when I turned off the car, white smoke/steam came out from under the hood. It was very wispy smoke, not a lot at all. Co-worked followed me home and again, it was an uneventful ride and when I turned it off, no smoke from under the hood.
This morning, the car started to overheat at a stop light after running for less than 10 minutes; it moved up 2 marks from the mid point of the dashboard temp gauge. Once I started driving, the needle moved back down to the mid point. The heater was on hot but blew mostly cold air, once in a while it would blow hot for a short time. A little more smoke when I shut it off again and I didn't get any messages.
Had to get it home and it did the same moving up a mark or two on the gauge, no smoke when I got home.
I checked the oil and the radiator and all looks well. I don't see any oil or coolant on the engine, the oil on the dipstick looks dark but not like there is other fluid mixed in with it. There is no bubbling or cracking sounds from the engine when it's running nor when the engine isn't running.
I don't notice any lack of pick up or power when driving and there's no dash lights blowing up with messages or warnings and no weird noises or problems starting.
The mechanic can't look at it until Friday - the BEST mechanic I've ever had - and I'm leaving it parked until he can take a look at it but in the meantime, I've searched the internet for cracked/warped heads, radiator problems, lack of oil pressure, blah blah blah and I just can't put all the symptoms together to even prepare myself for the worst.
Anyone have any input to help me prepare for the mechanics diagnosis? I appreciate any feedback, this forum seems the most helpful I've been able to find so am hoping the help keeps coming!