Had a international mechanic (questionable) tell me that the elc coolant will eat up aluminum anyone else hear of this

 

I read last night about that, quote from ford site

Motorcraft^® Premium Gold Engine Coolant has an optimized hybrid organic acid technology (HOAT) inhibitor chemistry that includes silicates for aluminum protection and nitrites for protection against cavitation on cylinder walls.

https://www.powerstrokediesel.com/index.aspx?PageId=406


Jim

 

I ran across a interesting article on coolant on a Jag website here is an excerpt about OAT/HOAT. It's a little technical but is written in english . The link at the bottom will take you to the full article.

The green-dyed EG "conventional" coolant we all know and love has an
additive package based around a silicate (and sometimes also phosphate)
based anti-corrosion additive. *It's well-established and does a good job.
It can go 5 years/50K miles without worry.

A few years ago, someone thought a long-life coolant (original plan: life
of vehicle) would be a Good Thing. *This lead to Organic Acid Technology
coolant (OAT), which is marketed as "DexCool" by GM and has been
factory-fill in their products (except C4 Corvette -- not sure about C5
Corvette) since 1995. *It's the orange or orangy-red stuff. *Someone along
the line decided the word "acid" was a Bad Thing to try to sell, so OAT was
recursively changed to Organic Additive Technology. *It can go 5 years/100K
or 150K miles -- provided it's not mixed with other coolant. *OAT has less
cavitation resistance than silicate-based coolant, and can attack certain
sealing materials, so it's not a good idea to convert a green-coolant car
over to OAT unless the manufacturer says it's okay. *OAT also has a
tendency to stain translucent plastics in things like overflow bottles and
pressurized de-gas bottles with a funky brown crud. *Oh, and OAT from one
manufacturer isn't necessarily compatible with OAT from a different
manufacturer. *Texaco is GM's OEM supplier and is licensed to use GM's
"DexCool" trademark on their aftermarket packaging. *I'm not aware of any
other company being licensed to do so.

Many European automakers use a hybrid of OAT -- HOAT (Hybrid Organic
Additive Technology -- clever, huh?), which is the OAT package with a small
amount of silicates added to increase the cavitation resistance and make it
less aggressive against those seals and gaskets. *This is often pale yellow
in color. *DaimlerChrysler is using it in several car lines now, too,
notably the LH sedans and the new minivans (It's possible the
Sebring/Stratus twins now use it -- I don't have that handy at the
present). *This stuff seems to offer pretty much the best of both worlds --
it's not quite as long-lived as straight OAT, but it is much better behaved
in operation than OAT, much like conventional coolant.

Note that these three different additive packages are not really
cross-compatible. *No, they won't eat the insides of your radiator if you
mix a little of one in with another in a pinch, but you'll be better to get
the system flushed out and a fresh mix of 50/50 whatever your car needs put
back into it.

Here's a link to the full article:
Cooling Fluids

 

I believe any ELC that is Cat EC-1 rated is Organic Acid Technology, similar to the Hybrid Organic Acid Technology of the factory coolant.

Although they are silicate and nitrite free (whereas FoMoCo Gold includes silicates and nitrites in the formula), they all state protection for all metals.

 

Thanks for the info ive had elc in my truck for about 15000 miles with no problems it just got me wondering when he told me that