Eagle7840· Premium Member
I'm a firm believer of the B12 after using Seafoam in my previous bikes. I wasn't aware of B12 till I bought my 96 Shadow from my Dad who used it for storage every winter and didn't ride it much during the summer for several years. When I bought the bike this spring and took it out for a test ride before the long haul back home it had hard time idling and response. Added about 2 oz. of B12 and ran it up and down the side roads and it cleared out the carbs. Granted there's nothing better than a complete carb strip down and cleaning after a long term improper storage.On this forum and others whenever I hear carburetor cleaners mentioned, it's Seafoam. Each case is different. The extent to which each machine has become clogged is individual, so it's difficult to honestly compare.
In 2001 I purchased a 1979 GL1000. It had been stored away for years in a garage. It was running on two cyinders it was so bad. I used Techron to remedy that. I've had equally good results with Gumout and Berryman's. I've used Sea Foam and it's hard to say because the results were inconclusive. One way to tell if a product is truly worth it's reputation is to judge how long it's been around. Gumout I believe is the oldest. It's been around for at least fifty years. Berryman's has been around for a long time, if not as long. It's hard for me to justify Sea Foam's price when the others have proven themselves several times in my own personal experience already.