Review on Tri Flow TF21010 Superior Lubricant Bottle by Hector Smith

This is amazing. I recently bought a Singer 503a (for 99.9% of you who don't know what it is, it's a circa 1960 sewing machine). It was semi-stuck, but I was determined to get it working. For two weeks I spent about an hour daily blow drying the insides (to heat/remove old grease), cleaning and re-greasing. It got better, but still slowly. I read about the magic of Triflow oil online but my local sewing machine shop didn't have it so I used singer oil. It was fine, but I was disappointed that I didn't notice a significant improvement in the machine's performance. Triple Stream came in today and I quickly tested it and got it working (some people recommend leaving it alone). a day or two. I'm too impatient.) This machine runs like a top now! I can't believe how well this thing works. I'm a believer!