First time poster on this forum. I live in Edmonton, and I was doing a web search on M-Pro 7 and it brought me here. Good discussion.
I recently won a Government of Canada auction for Turbine Engine Cleaner (B&B Tritech TEC-100N-3-RTU) which has exactly the same active ingredient as M-Pro & Hoppe's Elite gun cleaners. DEGBE (DiEthylene Glycol Butyl Ether). That is the aerospace research material the product ads are referring to. I won a lot of this product, over 50 barrels...
So I had a question about the shelf life. I have never heard of anyone ever complaining that their M-Pro 7 or Hoppe's Elite had gone bad. Even in the lowest reviews on Amazon, and there are only a few (compared to about 1000 5* reviews). The active ingredient has a shelf life of 5 years. After that, for military aircraft use, it is supposed to be tested at 6 month intervals to see if it has oxidized too much for that application. With a gun cleaner, as a gun cleaner, shouldn't the useful shelf life of this product be like 10 years or more?
On my barrels it says 2 years, but that seems to be a military specifications kind of thing (don't use anything remotely old to clean an F16 engine, sounds like erring on the side of caution, but yeah that makes sense). The 2 year shelf life on this product to me it doesn't seem a relevant shelf life for use as a gun cleaner. Assuming, of course that it is stored well. Thoughts?
I will probably make a post to try to sell or trade some of this, but that will have to wait until I can register and be approved in the exchange.