Why oil pilling?

Oil pilling was found on piston rod oil seal of right frontal strut cartridge.

Deeper consideration led me to the conclusion that the change of vector direction according to relatively wider change of camber value on right frontal geometry construction must have affected the result on earth.

Sealing rubber like deformable material must have hardened because of long time interval 40 years period, leading to the lack of rebound capability to seal the oil pilling.

Anyway the frontal cartridges on both side including rear shock absorbers would be replaced without any hesitation.