No, a Macpherson is a strut -shock combo unit that fits between the A frame and the vehicle frame.

some lightweight oil is poured into the strut body

You can go to any local mechanic to get your MacPherson strut installed. The mom and pop shops are usually cheaper, but take a little longer than the name shops.

The same way you do any macpherson strut assembly...

If you aren't familiar with the procedure, take it to a professional. Spring/strut assemblies can be dangerous if not serviced properly.

A strut is actually part of the suspension and not the engine.

The strut is a shock absorber surrounded by a spring and provides the upper pivot point for the steering.

I suggest doing a google search on "macpherson strut".