Steff1707822410

Hi, I have a Hornby Cadbury Castle and it sequels REALLY loud, it does run slow, but then it frees up and runs normal then runs slow again. This goes on repeat the whole time it’s running. I've presumed it needs an oiling (as it has never had a service in its lifetime), I’ve had the model for over 10 years, but majority of those years it has been in storage and not been used, but I do remember before I put it in storage it was squeaking. Where do I need to put the oil if that’s what it needs ?