Tried all sorts things to clean cpu and coolers and this is the best by far, even when it has gone hard. get some blue tack roll it and fix it around the area and put a few drops in and leave it for a bit to soften and bingo
Needed to replace the fan on my CPU, kept getting temperature-related shutdowns. Bought this and some CPU grease. Cleaned the CPU and applied the grease. Everything works perfectly now, no shutdowns since.