Hi. Would just like to share our story as we have nearly been scammed twice with selling our car! I saw on other websites and forums some people referring the oil in coolant trick as a Facebook click bait and it's not true but I can tell you it certainly is! Tonight 3 guys (Romanian/Turkish I'm not sure) turned up at 10:30pm tonight (should of been 9pm) to view my wife's Audi A4. They had been calling texting her up to this point to view and sounded desperate to view it. When we both went out to meet them they saw me approach them and one guy muttered "typicle" almost like they were only expecting to deal with my wife. We had been done before by a similar group who distracted us and ruined the coolant with a bit of oil, dipped there finger, then tried to buy it for £200 (we're selling at £1500) saying the head gasket had gone. (Head gasket would make the coolant gooey like mayo not pure black oil and clear water) Well tonight was frosty and stupidly when the bonnet was open and they were checking they asked I de-ice the screen with warm water. While I ran in to get that (big mistake) they asked my wife to open the boot and have a look there. 2 was round the back one under the bonnet. My wife was wary of them and as I come back out one guy jumped away from the bonnet so my wife lost it and asked what they were doing to the car. They all started to get very annoyed saying we were discriminating and waving money at us saying that they were buying for one of their wife's etc. my wife took a pic of there car and they drove off swearing and shouting stuff. We then checked the coolant and the cap was done up real tight so we know they fiddled with it as we had it looser. Hey presto! it had black oil in the coolant so we know we had been scammed as before they arrived we made sure it was clear as it's happened to us before. So this is the 2nd time and no, the head gasket hasn't gone. This is 100% real and no Facebook scam. Just thought we'd share our story as we saw other articles similar to ours and we don't want these f***ers scamming others out there.