what size oil line should i use on a dry sump vw engine? with a oil filter,96 plate oil cooler,and a 5 quart oil tank.i would like to run a billet block for my oil temp and oil pressure. but that is 3/8 npt fittings old line are 1/2 npt. is the billet block not a good idea?

I recommend using the same size as the input and output of your sump pump.

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