Short story my bro in law not a DIY. Changed oil and he over filled oil by 3.5-4 qt since he bought to big jug. on IS250 after overfill drove around for 15 min check engine came on. I reset ecu , drain out all the oil and refilled to correct amount and it having hesitation from stop and go. Like a lag then it jump forward and goes. Wonder anything i need to check also?

 

I would replace the oil filter element too JUST to be on the safe side.

 

Thanks come to find out he mistake the transmission pan for oil pan. Drain that and add oil on top what was in there haha.. All set now just have to check the spark plug now.

 

You need to get the trans fluid back up to par. RWD, or AWD? Probably drained a good 3 qrts if on ramps. I wouldn't drive it until you do that.

 

That's a pretty big mistake. Could of been a very costly one. Bro in law or not, I wouldn't let him anywhere near underneath or under the hood again...

 

Bruh..........