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If you have a gas fuel injected engine they are not cost effective unless going with extended oil changes and even then it is a break even deal. If you are running a diesel, there are advantages providing that you incorporate extended oil changes using oils designed for it like Amsoil or Delvac 1. It also requires getting your oil analized every 5,000 miles to check on the additive depletion. Should you decide to use one, make sure that you install a check valve that will cut the flow off of the by-pass should your oil pressure drop below 30lbs. In selecting a by-pass it is important to consider availabilty of replacement cartridges. Most by-pass units will easily filter to 3 micron. Of those that we have tested, the Amsoil and FS-2500 perform as advertized. Avoid manufacturers that have absurd claims such as their unit will reduce wear by 80%, etc. It isn't going to happen. There are others, I am sure, that we haven't tested that will do a good job as well. Best of luck in your endeavor.
If you have a gas fuel injected engine they are not cost effective unless going with extended oil changes and even then it is a break even deal. If you are running a diesel, there are advantages providing that you incorporate extended oil changes using oils designed for it like Amsoil or Delvac 1. It also requires getting your oil analized every 5,000 miles to check on the additive depletion. Should you decide to use one, make sure that you install a check valve that will cut the flow off of the by-pass should your oil pressure drop below 30lbs. In selecting a by-pass it is important to consider availabilty of replacement cartridges. Most by-pass units will easily filter to 3 micron. Of those that we have tested, the Amsoil and FS-2500 perform as advertized. Avoid manufacturers that have absurd claims such as their unit will reduce wear by 80%, etc. It isn't going to happen. There are others, I am sure, that we haven't tested that will do a good job as well. Best of luck in your endeavor.
I recommend Motor Guard becuase they are cheap to replace filter elements (.50$ roll of Scott Kimberley Clarke). Now i am alittle biased towards them but the ease of maintence and i have not run an oil analysis in 20,000 miles i top off the oil with a quart every 2k.. no UOA is necessary. A know a guy who has been usng bypass filters for 30 years never did an UOA.
Yeah Frantz filters worked very well, but are much messier to change than the Motor Guards, which is why i prefer them over the Frantz. But yeah they both do the same thing and can be used with Tp elements.