If the oil has any color, it is not good oil to put in a sewing machine. Machine oil is clear and is made to evaporate. That's why you have to oil so frequently. Regular oil does not evaporate, it breaks down and loses it's lubricating properties. How would you get old oil out of a sewing machine? so don't use regular oil. I use Bernina oil for all my machines because I like the applicator bottle. Singer brand of machine oil is fine, probably the same, and easy to find at stores.