Seafoam is intended as a fuel system cleaner to remove dried fuel deposits. I have never tried it, buy most who have say it works.
Marvel Mystery Oil is a holdover from the early days when non detergent oil was all that was available, and gummy valve guides would make valves slow to close, hydraulic lifters would collapse. The oil treatment would supposedly free everything up. That was before my time, but I doubt it did much other that turn more sludge loose!
Berrymans B12 is a cleaner. It is (was) marketed as a fuel system treatment, which would probably do nothing but turn more trash loose in an already contaminated system. But it is much more valuable as a non petroleum solvent. Good all around cleaner, good for cleaning brake components that must be oil free, good for degreasing before painting, etc.
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Today's Featured Article - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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