Amines are rather strong reducing agents. They will help to "untarnish" or reduce the silver containing level element in your gas tank back to the "reduced" or metallic state - the (reduced) state the metal was in before exposed to sulfur (sulfur being a weak oxidizer (opposite to a reducing agent)). FP60 will do the same. Test this by rubbing a tarnished silver piece with the Techron or FP60. Does it shine it back-up and leave a black residue on the rag/hands. It will do the same to the fuel sender in the gas tank, although slower, not as dramatically and probably never completely. The oxidized (sulfurized) silver level element in the tank does not conduct electricity the same way as the reduced (normalized) level element and thus you get all kinds of effects to include a wandering level indicator (gas gauge). There's a lot of non-sweet crude oil(meaning with a lot of sulfur) flooding the world market
https://bobistheoilguy.com/forums/threads/techron-and-sulfur-deposits-on-gas-tank-sender.68647/
So do they explicitly still claim it cleans the fuel gauge sending unit?
I just see the claim of "removing deposits" from the valves - and so that should include "deposits" elsewhere...
"HOWEVER, GM has just issued a TSB on this problem that applies to ALL GM vehicles and blames the high incidence of sending unit failures on high levels of sulfur in gasoline. The sulfur corrodes the sliding resistor mechanism and produces erratic and inaccurate gauge readings. To address this problem, GM has released a FUEL TANK ADDITIVE. According to GM TSB #06-00-89-07BB, you should purchase a bottle of GM Fuel System Treatment Plus (part #88861011 for GM brand, 88861013 for AC Delco brand, and 88861012 in Canada) and add it to your tank at every oil change. The additive cleans the sulfur corrosion from the sending unit and prevents new corrosion by laying down a protective film. The additive also removes engine deposits."
T ® ECHRON CONCENTRATE PLUS Complete Fuel System ...
So 2015 is the last time that specific claim was made? The question is - did Techron change their formula? They definitely added more lubricant to it.
Chevron's explanation of Techron Some excepts... "Techron and Techron Concentrate are polyether amines of slightly different structure, each optimized for its specific application. The principal difference between Techron and Techron Concentrate is additive concentration and rate of deposit clean up... A bottle of Techron Concentrate, whose additive concentration is roughly 10 times stronger than the dose in Chevron gasolines, provides a quicker clean up of deposits left by lower quality gasolines."
"In 2004, Marathon Petroleum Co. discovered that it had sold gasoline to thousands of motorists in the Louisville, Ky., market that had high levels of elemental sulfur, causing damage to the gasoline sensors. It paid out about $500 per vehicle to motorists whose fuel-sending units were affected. What do you do if you are stung by bad gas that has broken your fuel-sending unit? Before you go to the high expense of replacing the unit, you might try an additive. Late last year, Chevron introduced an additive called Techron Concentrate Plus that is formulated to clean the sulfur deposits from the fuel sending units. The sulfur in gasoline can contaminate the silver or silver palladium and the Chevron concentrate is designed to remove it in one tank of treatment, [Scott Cushing] said. A bottle for a 20-gallon tank costs about $10. It is sold at most auto parts stores and big discount stores. (Although Chevron puts Techron in its gasoline, the gasoline does not contain the ingredient that cleans the fuel sending units, Cushing said.)" Jan Richter
Wow - fascinating!!
OK so the FIRST bottle I put it - not sure if it was the "concentrate plus" - but then I bought the "two for one" deal that IS the "concentrate plus."...
https://www.latimes.com/archives/la-xpm-2006-may-03-hy-wheels3-story.html
Original source for that above quote.
For example, Chevron has introduced Techron Concentrate Plus, which is
formulated to clean the sulfur deposits from the sensors. Most sending units
use a strip of silver or silver palladium to transmit electrical signals to the
dashboard, but the sulfur in gasoline can contaminate the silver or silver
palladium.
A bottle for a 20-gallon tank costs about $10. It is sold at most auto
parts stores and big discount stores.
. If you look at the MSDS for the Techron bulk additive, it list polyether amines.
https://cglapps.chevron.com/sdspds/SDSDetailPage.aspx?docDataId=507044&docFormat=PDF
That's April 2020 - and the current link online. So yep!!! It's still formulated to specifically FIX the fuel gauge sending unit!! Fascinating!!
Techron - Wikipedia
Amines are a particularly attractive class of reducing agents because of their nearly universal presence in biological and environmental systems. However, there has been little reported about which amine properties, structural or chemical, are responsible for their utility as reducing and stabilizing agents.
A reducing agent is just a donor of electrons, and pretty much anything can act as a reducing agent, provided the species you are reducing is a strong enough oxidant. In your example, Au absolutely does not want to be at the 3+ oxidation level, and a relatively mild reductant (such as the electrons in the lone pair of an amine) will reduce it to Au(0).
If you want to understand what can and cannot act as a reductant or oxidant for a particular reaction I suggest you learn about redox potentials.
Chevron Techron is not a solvent it's a combination of polyether amines and doesn't attack rubber hose or plastic parts.
So that's their 2006 MSDS - is that "stoddard solvent" the polyester amines? no it's in the distillates.
Those are not "agressive chemicals" jez... they're light oils and pretty darn good lubricants too.
The gasoline in your tank is already composed of butane, pentane, hexane, benzene, xylene, cyclohexane, toluene, and nowdays even ethanol.
Chevron Techron is made up of the chemicals you listed but those are just so that it mixes and burns with the fuel. The active ingredient is a polyether amine - that's what does the magic, the rest is carrier and something to make the bottle big enough so that it looks like it's worth $10.
You might want to change the oil soon - if the Techron busted allot of crap loose it all didn't go out the exhaust. Just check the color of your oil - I know from experience!
Consequently, such amines are much more basic
Reduction is “addition of electrons” (to something) and oxidation is “removal of electrons” (from something). Therefore a reducing agent is defined as “an electron donor”. [And an oxidizing agent is defined as “an electron acceptor”].
Now the lone pair of electrons in ammonia can be donated to a proton and the ammonium ion is formed.
NH3 + H+ → NH4+
Now doesn’t it suit the definitions for a reducing agent?
A base is defined as “an electron-pair donor” or as “a proton acceptor”. [And an acid is defined as “an electron-pair acceptor” or as “a proton donor”].
Now doesn’t the above reaction also suit the definition for a base?
Note the similarity in the definition for a reducing agent and that for a base? Just two different words used for the same phenomenon.
sulfur atoms require two electrons to complete their outer energy level.
Metals like to lose valence electrons to form cations to have a fully stable shell. The electron affinity of metals is lower than that of nonmetals.
https://www.nuclear-power.net/silver-affinity-electronegativity-ionization/
So the Sulfur TAKES an electron from the Silver.
The Amine (nitrogen molecule) GIVES an electron to the silver
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