I’ve recently changed the oil in my March 2020 TCR (cars just done 10,000 miles and it was telling the oil wasn’t due a change for almost another year which didn’t feel comfortable with, call me old fashioned !) any how a quick call to my local TPS and they supplied me with 5w 30 long life fully synthetic quantum oil (in a environmentally friendly cardboard “cube” along with filter and new sump plug (made of plastic and really quite a clever design, think the sump is also plastic). Nice easy job on the whole and for what it cost I’m a lot happier knowing it has fresh oil in despite it having “long life oil” in. I’m sure lube technology has moved on but for peace of mind I’m sorted.