That's what they claim but is it true? Liquid metal has displacement issues and you need to reapply more frequently about once a year this is what they recommend for PC but Sony's version of LM might need less maintenance but I think after 2 years you will definitely need to paint on a fresh coat.
What I knew from reading... never used Liquid Metal.
It contains Gallium that will corrode most of the cooler with aluminium heatsink (even the expensive ones)... so you need a proper cooler with a material that won't corrode to use it.
It is hard to apply too but that is a machine that will come with it applied.
Now about the liquid metal aging?
"This shows that there’s more variance in application of liquid metal – a whole lot more – than there is measurable difference in liquid metal aging on our platform (again, based on a case study – please note that this is not 100% conclusive for all LMs on all platforms). You should be more concerned about how well the liquid metal is applied than about its aging. That said, monitor thermals every now and then just to make sure all is well. If you’ve been running liquid metal in a system for a while, please let us know how it has aged."
“How frequently should I replace liquid metal?” is one of the most common questions we get. Liquid metal is applied between the CPU die and IHS to improve thermal conductivity from the silicon, but there hasn’t been much long-term testing on liquid metal endurance versus age. -
www.gamersnexus.net
The issue seems to be more in the application of the liquid metal than it aging.
Some reddit I found:
"
Only change it if you significantly move or disturb the IHS. Otherwise it is pretty much set it and forget it. I will say though, I would advise, if you have the option (if not NBD), using a nickel plated block (vs copper) if you are also putting CLU between the IHS and the CPU block. Although something like Thermal Grizzly or any quality TIM there is probably a better idea anyways."
"liquid metal should never need replacing iirc"
"Delidded 4690K with CLU user here. 15 months now, no temp changes.
+1 for the slap it on and forget it camp. I see no reason to change it out unless I decide to take things apart enough to where it wouldn't be that much effort."
"I delidded my own 3770K back in 2012-13 or so and didn't check the liquid metal TIM (CLU i think?) until 2015 when I did some other upgrades. After all that time, it was still liquid and temps were perfectly fine, but I went ahead and changed the liquid metal TIM even though I probably didn't need to.
I also recently purchased a delidded 7700K from Silicon Lottery. They not only delid but reseal the IHS, so with no instructions or information to the contrary it
seems like once it's done, you can leave it."
Unless you try to make a upgrade in your PC that chances in the part you used liquid metal you are good to keep it forever I guess.