I just got a new old machine last week and it was far worst then your pictures show. The grease (sure it wasn't sewing machine grease used there as it was brown, not old looking at all) was solid like a rock in the parts and I couldn't move them by turning the wheel. I first put machine oil to soften it, let it set overnight as I couldn't even remove the parts they were stuck. On that parts I used a q-tip with sewing machine oil on them and tooth pick (plastic one) to soften and break out as much as I could. The old oil on the other parts were layed and dark thick hard brown. After about 24 hours I sprayed the part both removed and those still attached to the sewing machine with PB Blaster. Let them sit for about 15 to 30 minutes then used the q-tips and the plastic tooth picks to remove the dried up oil and grease. Put sewing machine oil on the parts again and wrapped them off to make sure I removed all the PB Blaster from them...then once I was sure it was no longer on any parts I reoiled and greased the moving parts. Ran the machine on high for maybe 5 minutes, replaced all the parts like needle cover, bobbin parts and put a new needle, threaded it up and it sews nice without making noise, very smooth. Now this took me about 1 1/2 hours to clean the parts from removing parts after sitting overnight in the oil, placing the PB Blaster, cleaning the parts and putting the sewing machine back together.