Originally Posted by Rat
Not to start a bonfire...
But, 3 in 1, Singer, Lilly White all have virtually identical ingredients according to their MSDS. In fact, I would be willing to bet that many of them have the same source and are just re-branded. Hoppes lubricating oil is the only true single part distillate I know of; I guess that is why it is a bit more expensive.
Also, you may see 10W-20 motor oil referenced as a light machine oil, and it is in reality, but it also contains detergents that we do not want on our machine surfaces.
Interesting post. I must confess I have not looked at the MSDS for the various products. It has been my understanding that 3-in-1 is blended with a penetrant but I could be wrong. I have never seen 10w-20 referenced as light _machine_ oil. Certainly a light motor oil. But yeah those are different.
As for it's bad rep... It advertises as a _cleaning_ and _anti-corosion_ agent as well as lubrication. It is also owned by the WD-40 company now. That may be where the penetrant charges emerge. WD-40 has been called kerosene in a can. It is not a lubricant as stated. In any event... I would trust oil by the sewing companies over one by WD-40 for my machines. But that's me. As said before OYOM.