quote:Originally posted by ADFD1:
IMO the Amsoil filter is trapping less dirt up until its half life, possibly letting twice the smaller particles through early on. Then when it starts to load up it starts to filter more efficiently, but it took half its life to get there. You're only talking about changing the Pure One filter twice in 25,000 miles, and the cost of the two filters is still less than one Amsoil filter.
I never said the amsoil filter was letting more dirt through up until half life. I said to imagine just how much better at the half life. If I'm not mistaken,..filter efficiency is based on half life or something along those lines.
It has been proven industry wide that changing any filter, oil,fuel,air,etc. too often too soon is actually a detriment to the efficiency of the filter. It causes more wear,not less.
Even when new,...the difference between the amsoil and the P1 related to initial particle size is basically splitting hairs....With the exception being that the P1 is more restrictive even when new.
The amsoil filter gets better long before it's half life,and is at a very high standard when new,it's been proven. Someone on bitog ran a test to back that as I recall.
If you are that concerned/paranoid about particulates....then I would recommend you put your fears to rest and install a bypass filtration system. It will filter done to One micron or better in some cases.
By installing a good synthetic oil and using a good depth filter.....just how long do you think your engine will last. You will probably never wear it out. The car will fall apart around the engine. How many cars are junked with still running engines?
The depth filter makes the most practical and economic sense and does an amazing job at keeping the oil very clean with extended OCI..... including from the start of the oil change.