Also, back in the day I ran into an issue where after a rebuild my dipstick was rusty and the oil looked creamy. Mine was a blown head gasket. Could also be a cracked block. Run away!Please please please take the oil dipstick and a clean paper towel and wipe it . If you see metallic or black that comes off thr dipstick walk away. I made a terrible decision buying a 2015 srt 392 and I figured the oil was just dirty, nope it was bearing material. Whole motor is trashed at 50k. When I pulled the oil filter and cut it opened the real reason why it was for sale appeared. Drive the chllenger around for a few hundred miles before you buy it. Make sure no codes were just cleared before you showed up to buy it .
Just don't want a mistake to happen to you like what happened to me