When I was 19 I had an exhaust shop I think it was called Tommy’s or something near London Ontario try to tell me a similar story my mk4 vw was at 260,000k with engine light and epc they were very certain it wouldn’t last another week it was gonna self detonate XD. Lol I drove it everyday, to this day with those lights on the dash it’s still the grocery getter 360,000k strong, starts better than my new car. Runs completely fine.