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Never tried the FS2500 on my Jeep, but did put one on my semi with Cummins ISX. Didn't really see any major improvement in oil samples. Soot levels were already <1 ppm most of the time before putting it on because I had disabled the EGR on the engine. Per samples, I still had to change oil before 30,000 miles (Cummins OEM oil change interval 25,000 miles). I have been running my Liberty CRD to 12K miles without bypass and oil samples are fine. The FS2500 wasn't worth the cost for my semi, it most likely would not be worth it for my Jeep. Unless you are just wanting to shell out some extra cash and put something on the Jeep, I wouldn't waste the time. I have taken a few large diesel engines to over 1 million miles without bypass filters and they still had no major mechanical issues. The last one got 30,000 mile OCI for its entire life with Kendall 15w40 and Baldwin oil filters.... I got out of it at 1.4 million miles and it is still being used locally and has not had the engine torn into. Diesels are built extremely well and the VM engine is top line. Maybe the emissions add on stuff is lousy, but the internals are first rate. Before you consider a bypass unit, run a few oil samples on your CRD and see if you would really benefit from one. When you factor in the extra filters, the makeup oil you have to add when you change the bypass, the oil sample cost to make sure the oil is holding up like it should, etc... You might just be well off to use a high quality oil and change it regular, especially since a few quarts of synthetic and a filter are not that expensive. Claims on paper look nice, but keep in mind, those outfits trying to convince you to get a bypass filter are trying to sell a product. They only care about their bottom line, not yours. That is not to say bypass isn't good, just that it is not the greatest thing to come down the pike since the country was founded. The additive packages in modern CJ-4 oils do a fantastic job of keep soot and other particulates under control. There has been millions of miles of test data in the last few years regarding CJ-4 that show it is doing the job well. I will have to search for the issue, but just read a report in a major trucking magazine that shows the oils are doing a stellar job in the emissions equipped diesels and is not the problem everyone feared. Heck, Detroit Diesel has upped their recommend oil change interval now to 50,000 miles on their DD15 engine using CJ-4 oil and no bypass.
But if it makes you feel better.......
_________________ ************************************* Environmentalist Green + Socialist Red = Facist Brown
2006 Liberty CRD, Frankenlift II, Al's A Arms, Moog LBJ's, GDE tune, Etechno GX3123 Glow plugs, Fumoto drain valve, Elephant hose CCV mod.
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