Here's an example of that:
http://s176.photobucket.com/albums/w186/curt160/filters/?action=view¤t=Picture002.jpgThat's the smallest one they make and it just barely fits in that location in a truck.
[quote=Hotrod Lincoln "Full-flow" oil filtration means that all the oil that leaves the oil pan and is pressurized by the oil pump flows through a filter before it reaches the engine bearings. In this type of system, the filter medium must be of sufficiently open-weave construction to prevent signifigcant loss of pressure. Most modern full-flow filtration systems have a spring-loaded bypass valve that opens and routes oil around the filter element if pressure drop across the filter exceeds about 4 PSI. The problem to having such a free-flowing filter is the fact that it will allow moderate-sized contaminants to flow right through the filter. A full flow filter traps "rocks, marbles, and medium-sized grains of sand", in the words of an instructor I had in a General Motors training center class I once attended. This type of filter exists to trap pieces of dirt big enough to wedge themselves between rotating parts such as the crankshaft and rod or main bearings, and other close-tolerance areas. Jerry
