OK.....Don't ask how I did this but I did it on accident. I put a quart of redline differential 90w oil in my motor today. The car was running when I poored it in, I imediatly realized what I did and shut off the motor. I am changing the oil tomarrow!!!! I havn't drove it or started it since this happened. Will this affect my motor in any way? My fellow rotary friend said it should be fine as long as I don't drive it. When I change the oil should I warm it up as usual or just drain without starting?

I'm an *** and I know it.

Thanks in advance

 

no - the motor should be fine. just do as you stated and change the oil.

 

Don't you just hate how redline uses the same shape bottles for all their lubes?

I'd just change it with no warmup, to be on the safe side.

 

Yeah, just drain it out cold. It may take a while though.

 

I'd completely drain it out, then, while the drain plug is out, I'd pour maybe a 0.5 L oh normal oil in just to be sure you got it all out. Technikly, I don't even thing that oil will have donw NE thing to the engine except give it a hard time to start. Don't start it, drain it out COMPLETELY ( leave it sitting for 30 min) and poor a bit of normal oil , should be just fine.