First bypass filter change?

[Rawze]

(11-18-2016 )dhirocz Wrote:  I've been running an Amsoil bypass filter on my 2010 ISX since 615k. I got the truck at 607k.

I've seen improvements with oil sampling even though it now has 652k on it. So far I've been changing the oil at 15k intervals, using Rotella.

The oil no longer looks like ink, though it's obviously still black. Just wondering how long you guys who put a bypass filter on a used truck ran the first filter before changing it?

for the Amsoil bypass filter -- Get a propane tank level monitor strip from wal-mart (or use the back of your hand lol). When you start the truck up and the engine is still somewhat cold,... measure how high up the filter the oil is flowing (where it transitions from cold to hot as it warms up). If it is only getting warm at the top 1/4 - 1/3 of the filter, it is time to replace it. -- simple as that.

or

if ya use one of those propane level strips.. don't leave it on there. 230+ degree-F temps in a hard pull will damage it if,. not melt it. -= I found this out the hard way lol