Hi I was just looking at the engine of my company truck and noticed the fuel filter canister was full of fuel. It's a Cummings isx15 which normally uses a fleetguard fs19765 filter. The filter they have in right now is ff5369. The fuel level is showing all the way to the top practically. The truck is running fine did they put the wrong filter in on purpose is the one that they are using okay to use and why is it showing full?