It's better to use it regularly to prevent the build up of crud in the first place. It's amazing stuff. I had a graduated cylinder that had some nasty oily junk down in the bottom of it that had been there for years. I couldn't reach it to clean it out. I put a little Seafoam in the cyinder, and a day or two later it was as clean as a whistle. The junk just dissoved in the Seafoam. But it's safe to use on nylon, which is good, because that's what the small filters on the pickup tubes in the gas tank are made of.norsseman said:What does Sea Foam do exactly? Would it help a new bike? or is it
for older bikes mainly?