I see these videos of coolant filtration and I see the videos telling people to install these. From what I've seen this does nothing worthwhile. The coolant has silica dissolved in the coolant and when the coolant is overheated or is overworked from age the coolant no longer holds that silica in solution. It precipitates out and clogs cooling fins in the oil cooler. I hope everyone agrees on that. The solution is to not filter out the problem it's to prevent it. Spend an extra 10$ and use a different coolant which contains no silica. Now the silica can't come out of the coolant and create a clog. The high mileage coolants used in heavy diesel equipment is designed to avoid this problem and does a better job of stopping cylinders and sleeves from pitting due to cavitation that happens when an engine is working hard and the coolant is very hot.