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Center Valley Wisconsin | I was going to reply in the past on this question, just didn't feel like getting into the discussion/argument....
Probably a dozen years ago I did a test on a couple additives, (Power Service and Schaefer's). In the compressor I use for sandblasting. It's an Atlas copco 375 cfm 4045t JD engine. When sandblasting nothing changes,,,,,,set up the job, start compressor, blast. Since 1992 most every job was about the same, always blasting heavy iron,,,,dump trucks, trailers, etc. So the compressor would always run nearly wide open and only idle while filling a 600 lb. blast pot with sand and changing window in blast helmet 2-4 minutes and then back to blasting. Always thought 4.5 gallons an hour was plenty of fuel usage. For years I bought fuel from the same supplier,,,he was always 5-10 cents cheaper. I asked him if he had an additive package in the fuel and he said it wasn't needed. In the winter he would supply blended fuel if you wanted it.
Like most things in life the only way to learn the truth is to try it yourself. So the reason for my test was for fuel economy. For about 3 years, every time I filled with fuel I wrote down hours, gallons, and oz. Of additive added. (Mixed according to label) The results I had from both products were almost identical with a slight edge for Schaefer's. Consistently would get fuel consumption down to 3.7-3.8 gallons per hour from 4.5.
And yes I tried Ruby Fieldmaster and it always ran around 4-4.1 gallons per hour. So when I ran additive in fieldmaster fuel I got the same results down to 3.7 to 3.8 gallons per hour. Didn't matter what I do 3.7 to 3.8 was as good as it would get.
So I always run additive and everything,,, during the experiment I put the additive directly into the compressor,,,, now I put the additive directly in the fuel barrel mixed according to label based on gallons added. So that's what happened here,,, I'm not going to argue whether fuel additive would work for you or not but I do know fuel economy improves in an Atlas copco 375 CFM John Deere powered compressor.
Edited by 4020panther 1/27/2026 07:09
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My results-diesel additives
