Bypass filtering ends up with cleaner oil, especially if you use a very low-micron filter element. Full flow filters are for rocks, marbles, and small boulders. It's a myth that full-flow filtering is somehow a better option.
Jerry
What he said. I use an Amsoil bypass filter with an effiency rating of 98% at 2 microns. The full flow mod is only as good as the filter being used...it's internal bypass spring/disc decide whether oil is filtered or not.
I have never ever seen a case where an engine seized because the filter was plugged...why? because oil simply goes around when pressure differential dictates. One needs to cut apart a few to really determine what's going on.
