Quote Originally Posted by 12vdc View Post
Doable naman yan tulad nung nilalagay sa jeep na oil pressure gauge or tulad ng FASS.



Sana yung test strip for oil na lang to measure viscosity,TBN, and wear metals. Parang pregnancy test strip lang.
All it really need is a differential pressure switch / gauge across the filter which tells the pressure drop across the filter, or if it is high tech would be a diff. press. transmitter or transducer with a digital read out to be used as input to a computer.