overheated should I change the oil

[ram_man]

So I got this little 05 civic about a week ago. Really liked my friends civic and got a good deal on this one. I changed the oil and only had 100 miles on it it is mobil 1.
I had a shop flush the cooling system and they didnt get all the air out. It hit according to my scan tool 271 2times as soon as it got next to the red i shut it off. It made it several miles before overheating.
it was stable at 225-246 until it finally wanted to keep overheating. I didnt want to drive it but I had a family emergency and had to hurry. When I reached my destination I pulled the temp sensor filled the system up and waited for it to pour out of the sensor hole and its been fine since. Should i change the oil and hopefully i didnt do any damage.

If this is not the right place for this i apologize. Thanks.

 

[daves66nova]

Mobil 1 oil should be good.

 

[Eddie]

NO need

 

[Hyde244]

271 degrees Fahrenheit translates to 130 degrees Celcius, well within M1's thermal parameters. M1 is rated for a flash point of 230 degrees Celcius, which is 446 degrees Fahrenheit.

You are good.

 

[MolaKule]

Anytime you go into a high temp excursion, you are going to accelerate oil oxidation.

I don't think you need to change the oil right away but I would not let it go to 10k.

 

[randomhero439]

Just for reference: The Nissan GT-R owners manual says to change the oil after hitting temps over 268F

 

[Chris142]

Those all aluminum engines usually blow a head gasket before 230. There is no way yours didn't blow a gasket.

 

[nitehawk55]

I would be having a "word" with the shop that did the flush .

I would not be as concerned about the oil as I would about other potential issues that may come of this...maybe not now but you might see a head gasket issue at some point .

 

[fdcg27]

I wonder whether this car already had a bad HG or a cracked head?
Both can cause episodic overheating, until they get really bad, then you have overheating all of the time.
Any residual air should purge itself in normal operation, and even severe underfilling will not cause overheating in normal driving under moderate conditions.
Don't ask me how I know this.
If this were my Civic, the oil would be my last concern.
I wish the OP good luck.
I hope the engine is and will be fine.

 

[ram_man]

Originally Posted By: Chris142
Those all aluminum engines usually blow a head gasket before 230. There is no way yours didn't blow a gasket.


I dont think the fans come on till 220.......

Also I think the air bubble was stuck by the thermostat. Which is where the temp sensor is. So the sensor could have been seeing much higher temp than the engine.
If that makes sense. Car never pinged or anything out of the ordinary. It has since ran just fine.

 

[ram_man]

Also the radiator never boiled over either.