Cooltek LP53: factory thermal paste or third party?

Hello,

I am going to install a Cooltek/Thermaltek LP53 cooler on my CPU. I have just noticed the cooler is shipped with thermal paste. Would you recommend to use this factory paste or put some third party instead? I have some Kryonaut which I bought for this purpose and if it can help lowering the temperatures I would do it for sure because my project involves putting a potentially hot CPU (8700k) in a small case (Fractal Design Node 202).

Thank you in advance for your advice.

This is how the back of the LP53 looks like. Actually it doesn't look like regular thermal paste. I can't see any film to remove there. Should I remove these grey pads and replace them with Konduktonaut? In this case, how do I remove them?

Could these pads be made of graphite?

OK, it seems these gray pads are just made of thermal paste and according to this page it offers a thermal conductivity of 4 W/mK whereas the Thermal Grizzly Kryonaut offers 12.5W/mK. So I think I'll wipe out the stock paste and replace it with the Kryonaut.

glad we could help