Going back to the original post !!

Surrogate is wrong.
Subservient maybe, subsidiary or subordinate possibly.

Tends to imply whoever is in charge of "right thinking" doesn't have English as a first language or is poorly educated. Tangiers Orange - gone, missing her
Replaced by Ewok what a mistake - now a happy Disco Sport owner

I suppose a flanged coupling is right out of the window my PC is slightly to the right of Genghis
2012 HSE SD4 In Orkney Grey now gone, best car ever.

And then there’s swirl flaps

That's why we remove swirl flaps.
Just to be on the right side of correctness.  Now at the point when I learn something new something old is lost out the other side !
Now retired so it doesn't matter anymore.
Freelander now gone.

Balljoints ??? ! 2013 FL2 XS.
Defender 90 300 TDi.
Defender 90 300 TDi CSW.
1964 MGB Roadster.
1944 Willys MB "Jeep" with bullet holes. (gone)
17 hand Irish Drought Thoroughbred (mostly lame)
Nagging Old Boiler.