Originally Posted by otto457
Personally I would have dumped the oil and started over just because of the silicon. Iron should trend with wear, but you can see the silicon is slightly excellerating that wear. TBN stayed in a good range though with the 1 qt change. I'd probably go with dumping it all when you see contaminates reach a certain point. Seems to be working for you though. Those Amsoil Ea filters aren't cheap though.
I thought that the silicon would have continued to get worse but it leveled off after the 5th or 6th sample point. Not sure why.
The Ea filters are definitely not cheap. My first order was for a bunch of Ea standard filters (I think 5) - only to realize that the by-pass kit takes a different size standard filter than the one that would normally go on the truck without a by-pass system installed. Those extra filters are still sitting on my shelf because I forget to bring them with me when I go to pick up the extra supplies every 6 months or so.
For me, I justify the added cost based on getting 250K out of a truck. If that gets me 6 months more life out of a vehicle, then that's 6 months of new truck payments I'm saving.