I know people who put 90kplus on turbo diesel bypass filters, I've even heard of 120k on a bypass. Don't believe me -check out TDR website, (turbodeiselregistry). One of these links even show 500k miles between oil changes, and that's on heavy trucks. They do oil analysis along the way and it always seams to come back recommending the oil not needing changing yet. To be honest I would do some research on if it's appropiate for your application. I know for a fact it's a very good option for a turbo deisel as I had one, and they are also very good for standard gas motors. The usual problem is finding a place to put it, but if you have that solved I would think it would be appropiate for any application, but that is just an opinion. The main difference in a bypass is having two substancial filters versus one standard filter. Standard filters allowing particles up to 20 microns floating around your oil and bypass reducing that to 1 micron, and as a bonus it makes changing your own oil much easier. The downside is cost of the filters, but if you extend you Drain intervals it more than pays for itself, especially if you use synthetic oil. I know you can find varying oil flow in your bypass filters so if your worried about it just check a heavier flow filter. The question is a personal one for you, do you think perhaps slightly reducing oil pressure is more of a threat than having larger particles in your oil floating around? I'd guess there are also heavy duty oil pumps that would totally ease your mind.
http://www.gulfcoastfilters.com/how_do_i_e...utine_oil_c.htm
http://www.findarticles.com/p/articles/mi_..._67/ai_73410122