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I have a number of diesel vehicles around here and I have decided to implement a new plan of action. I am in the process of putting bulk-head drains in the lowest point of every tank on the place. I snagged a whole bunch of manual two-tank selector valves at a swap meet. I am mounting one of...

OKAY, I stumbled upon this and it makes more good common sense than anything else I have read on the subject: This info excerpted from a thread titled "Asphaltene in Diesel Fuel" at a site called TDI Club, dated 23-February-2010...

Get some good samplings of the goo, both on a steel screw-driver and a plastic spatula; and, mix a few jar-fuls of the Ox stuff at the recommended dose ratio. Place your samples in individual jars of the mix and observe what takes place. I am very interested in whether this Ox stuff actually...

I have recently read so much on the subject that it is all getting mixed up in my skull. It seems like I read that with Acetone, one should be careful where they use it. I may be completely wrong about this; I think one must restrain use of Acetone to steel tanks and fuel lines, keeping it...

There are two entirely different fuel contaminants that grow inside diesel fuel tanks, "Algae" and Asphaltenes. The Algae is organic and the Asphaltenes are chemical. If you can get your fingers on the problem, it is real easy to tell which you have. Algae is slick and slimy and will wipe...

Thanks to this article providing me with the confidence to disassemble and refresh the internals of my two STUCK and FROZEN 4-position WeatherHead 6747 fuel selector valves, I have successfully disassembled and refreshed them back to good working order. This is what I discovered = Delrin is NOT...

Thank you so much for doing this. I have been running 4-position/3-tanks Weatherhead valves for years and have never before been able to find any information anywhere as to how to service and repair them. It appears the valve you show in your photos is very similar to the ones I use on my...