Datsun 1200 struts are the easiest to install.

If they are leaking, try tightening the Gland Packing Nut

Source of leak could be a pitted strut rod, defective gland seal, or damaged tube threads.
Or you can replace the gland, seal, rod & nut with strut insert cartridges. Nissan
part number 56105-H5025.
