Thanks for the information.
Was this a recent change?
I started a thread on this very topic back in the summer.Ive had the new green formula with PTFE and without.But being there are no lot numbers to go by there is only speculation.So its beating a dead horse.But.
Here's some info and history for the Break Free followers from a couple emails I got in response to my questions on the topic over the last couple years from Don Yoder.Figured someone here might be interested.Interesting to me anyway.
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Date 9-21-02
From 1979 to 1993 we used chlorinated solvents combined with non-chlorinated solvents(about 24% total by volume).In 1986,when testing the M16A1 at -40 C(F) we found the viscosity of the oil portion was a bit high.Everything was o.k. at -30 C but not at -40 C.The critical viscosity of the was 7000cst.Below that o.k.,above that trouble.In June 1993 we were advised that our formula would be required to go non-chlorinated.We had already been shipping non-chlorinated into Europe with the viscosity adjusted for the -40 requirement.By March of 1994 the non chlorinated version replaced the chlorinated version on the Military Qualified Products list(QPL).At the time the military specification was in revision D,Amd 6 with revision E being proposed and still is proposed awaiting QPL testing.In 1999 and again in 2000 the M16A2 and the M4 carbine were tested at the -40 C temperature to verify the ability of our products to meet this requirement and all went well.For production we found we could use the "D" revision as our aerosol using carbon dioxide as the gas to get it out of the can.For our liquid we elected to use the "E" material as it has less solvent and provided the user with a higher viscosity to help reduce run-off.The only performance difference was the viscosity at -54C weather.When the solvents evaporated they are both the same,
To support the lubrication we still add a small amount of the PTFE powder to help improve the boundary film.
The PTFE powder turns to a gas at 1% by weight per hour at 900F.Just make sure to keep your gun below 900F for extended periods.The 0.5 to 1 micron particles are in a very thin layer next to the metal.Not a real problem.I would think people would be more concerned about the far higher quality of oil but PTFE always seems to get the attention.
Date 8-26-03
Our supplier of the prime rust inhibitor advised us they had an upgrade in early 1998.We tested it for nearly two years to make sure they were right in it being an upgrade.This happens from time to time when someone's manufacturing process is upgraded and we let our lab determine the true value to Break Free.However,in this case they were right.Corrosion tests showed an improvement and the lubrication tests were o.k. as well.
There was a shift in color from amber to an emarald green(light sensitive and goes back to a light amber in the sun)and we noticed the PTFE powder dispersed better.Its always nice when a change in fact a change for the better.It was put into production at the end of 1999 and began going into distribution in May 2000.We heard alot about the green but lab tests/results were all good.
For military work there are 14 different tests we are required to meet so testing is always needed to make sure we are getting our job done.Thats why it takes several years before any change,large or small is allowed and never in the basic chemistry.The last major change was in 1993 when we went non-chlorinated.
The new formula was adopted by the military at the end of 1993 and went on the QPL in March of 1994.That formulation change began in 1989 and the work finished in 1993,so you can see we are very careful when looking at upgrades.
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I started using Break Free in 1989 and have been a huge fan.So I do try and keep up,and yeah I ask good questions and alot of them.For those of us that have had the new green formula with PTFE can say that the PTFE actaully looks grey in color due to the new formula.All bottles Ive eye balled still say shake well.
And if you read the MSDS's the aerosol version is closer to what the military uses.More solvent.
I will attempt to contact Mr. Yoder again and see what he says,PTFE or not.That is the question.
Raymond