I’m thinking of placing one inline in the top radiator hose before initial startup and for the first few months or so afterwards. Just curious to know if others do the same. My block had been jet washed as California frowns on boiling them out the old, better way and I had my head machined too so, there’s probably some swarf still in there somewhere. Anyway, I had my radiator rebuilt with four rows instead of the three so I want to be diligent about keeping stuff out.
I’ve looked online and I like the ones with a cap for access/ cleaning but for the materials – plastic – and price (ripoff), I’ll probably make my own.