Recently did a complete tune up on my Grand Cherokee and was going to change the fuel filter while at it but could not find the location of it. Crawled underneath the Jeep and looked front to rear on drivers and passenger side and front, rear and sides of gas tank and could not find the fuel filter. Does it have an in-tank filter? It's a 1998 Jeep Grand Cherokee by the way with the 5.2L V8.