Hi Mitsubishi owners

I purchased a 1994 RVR diesel turbo 5 speed manual transmission. It runs great but Iam finding no information for maintenance and repair. In particular, I was looking for where the fuel filter is amd a replacement, oil filter replacement for the deisel engine and battery since they both meed to e done. Any help would be appreciated for this older diesel, or if there is a specific forum that would be good.