I was originally using the Stanadyne additive but shifted to the Powerservice brand in the silver bottle. Lately I've been using some from a commercial vendor(can't remember the name of the maker) after being given a nearly full 55 gallon drum of it by the folks my Dad was working for. They said they had to get rid of it because they couldn't get an MSDS sheet for it. It took me about two minutes to call the place listed on the drum and find out everything I needed to know about the stuff. In this case it was a somewhat proprietary mix they had made up for a bulk distributor.
So far I haven't noticed any real difference in any of the brands, and have been maintaining within about 1/2 MPG with all of them. With the stuff I'm using now, out of the drum, they make claims of a slightly higher percentage of gain than I am seeing, but there always seem to be better results gained under controlled conditions than typically seen in the field so it doesn't bother me a bit. Not to mention it's nearly $1000 worth of free additive so who am I to complain...LOL
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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