bought this repair seal to add to engine oil. Where is the crankshaft to put it?

Yes you're right. I noticed I wrote it that way after I sent it. But the bottle says add to engine oil on the front. But directions on the back then says add to crankcase. I was afraid to put it in the same hole as the oil.

My point EXACTLY. The fact that your automotive knowledge is limited , is why I'm trying to steer you towards a professional that can properly IDENTIFY the noise , BEFORE you make it worse. ...........The crankcase is where the oil goes ....who did the oil change???

Yes you're right zip tie. Thanks. And castrol did oil change.