Costs me 15 cents per washer delivered, why bother risk it? The world doesn't need more cancerous used motor oil on the ground.

After downloading a service manual and doing many things myself it became very apparent that mechanics barely bother to do work the right way despite it coming at virtually zero extra effort.

It's quite rare to see them use a torque wrench on many bolts and if you ask them why "they know it by feel", cool, but why not use a torque wrench to the proper specs anyway? It's not any harder.