So i bought i honda engine last week from a local pick n pull and I took it to a machine shop to have it all checked out and cleaned. After i picked it up i was nice and clean and found out it was cracked. So i put it all together and tried to return it and I couldnt get credit or an exchage because the manager said it didnt have the marks on it. A worker told me some number and told me to write them on the block and I cant find the pen they used. I remember it was a yellow and sometimes other color ball point pen/marker that is oil based this is like a fluorecent.

 

It's a paint pen?

How is anyone going to know what pen that an unnamed pick and pull uses at a location you don't list?