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I heard that GM used a filter that fits in the stanadyne FM100 base on the newer trucks with a 6.5 (like 1995+). That's why I chose it. Parts availability is important to me, cause I go all over the place. I bought 3 filters with the filter base over a year ago.. I still haven't replaced the one...

Stock filter bases almost always leak on these things. I went spin on, no more problems. Haven't touched the filter unit since I put it in, money well spent. Mine is stanadyne FM100 system. Pricey ($120ish with shipping) but awesome. If it needs CRANKING to start, you have an air/fuel leak (air...