The stuff, it is meant to be used between the heatsink and the thing to what needs the cooling.
The stuff is silicone grease, and the purpose for it is to fill the "air" gaps between the heatsink and the object that needs the cooling. Using the grease the heat spreads better to the heatsink (collar)
The cooling collar, needs to be BIG in order to do anything for the oil temperature. If you check out the specifications for ex. a computer heatsink (BIG ONE) you can see that they are able to remove some 70 watts of heat.
If you think that the collar can remove much more than 70W of heat maybe it will make a difference, but I will not believe before somebody actually proves that its worth anything.
70W-100W is nearly nothing, when talking about the heat cars engine produces.
|