Sewing machine oil

There are 3, 5, 10, 10 for professional grade, and then you choose according to the age of your car. The longer the age, the more wear and tear of the sewing machine parts will occur, and oil leakage is more likely to occur at this time. The higher the number, the higher the concentration, which can slow down the oil leakage to a certain extent. . . It's OK if you consult a needle car dealer. For example, the Dajie Wang bought in small barrels seems to be marked in English as A AA AAA. Just pick the 5 in the middle. Generally, other people who make clothes buy white mineral oil in large barrels, regardless of the number of semicolons, just buy the cheapest one. If it is too watery, add appropriate oil to thicken it.