im trying to decide for my 4.7L tundra witch to buy.can you guys help me. i found a web page that tested them both and the purolator flowed: 30W 70F Oil flow @ 10psi: 17.2 oz per minute and the mobil 1 flowed:30W 70F Oil flow @ 10psi: 8.1 oz per minute but the mobil 1 filtered just slightly...