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Believe from reading lots of people have up graded the secondary and final to spin on. I think the booster pump could handle more that our IP ever could. My perfect set up would be like what has been done or Parker up grade in tank pump. Primary water filter 30/20 micron then after the booster...

Did you upgrade the in tank pump too? If my truck has sat awhile I let my stock pump pump awhile before I hit the starter and she goes on the first push of the button. Mine replacement's from NAPA primary, 10 secondary, 6 final.

I wonder if the reason the secondary and final are after the booster pump would be it is easer to push than to pull through the last two. Myself I would do spin on in the same place as the secondary and final then a water trap / 10 micron filter before the booster in place of the primary. Also...

OK no worries. It's not a 2 micron its a 6. Napa 33540 on the finial then we will be steping down from the 10 micron in the secondary instead off just two 10's. I worked as an engineer offshore on some big DD, Cat's and ALCO's and they had at the least 4 Racors. Now they are both water/fuel all...