Don’t fall into the trap of overanalyzing the stuff you find posted here and elsewhere on the Internet, we aren’t making C4 or Nitroglycerine where the formula has to be right or 
What if I told you that vegetable cooking oil will act as a lubricant? 
My point is that people get too hung up on finding the ‘perfect’ lubricant. The fact is, Bambu includes PTFE lubricant in their shipped products. But if you check under the bearings beneath the lead screws (which I recently did with a flashlight), you’ll see that the factory uses grease. Grease has its purpose—it’s sticky and stays put, though it does tend to collect dust, especially metal dust.
Ultimately, it’s often a matter of personal preference. I prefer a less viscous PTFE lubricant, like the ones listed above, and do more frequent cleanings. Others might prefer a ‘set-and-forget’ approach, where grease is likely a better fit. Since PTFE lubricants are available in both oil and grease formats, it really comes down to how much maintenance you’re comfortable with.
As for sewing machine oil, it can work, but it’s lightweight and doesn’t stick as well to heavy moving parts, which is likely why it’s less recommended. Still, if you reapply frequently, it’ll do the job. In fact, you can even use gun oil in a pinch. The key is keeping parts lubricated—that’s often enough.
Here’s a search term on Amazon that will list a bunch of PTFE lubricants. Pick the one you feel will fit best in your life. Avoid sprays however as they are tough to control, even those with straw dispensers.
https://www.amazon.com/s?k=ptfe+lubricant
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TIP: If the product says PTFE or Teflon and you are spending much more for that brand, you are likely being suckered. There are a lot of retail companies that sell retail packaged product and prey upon shoppers who don’t do their homework. Always search on the web for that product just to verify that you’re local hardware store doesn’t already have the same thing at a much lower price. If the price is close enough, then you know that the seller is charging a fair price. If it’s got hyperbolic statements on the label like “New Formula” or “special” run away!
Here’s an example of two identical products. So which one should you buy? The one with the lower cost per fl oz. Note that DuPont attempts to conceal the fact that they’re using PTFE by calling theirs “DuPont Teflon,” which is just their registered trademark and brand name for the chemical PTFE, and they charge 23% more. Here’s the kicker—people fall for this all the time.
