Originally Posted By: 901Memphis
Changing an air filter every 6k would actually result in more harm to the engine due to the higher ingestion of silicon in the early part of the cellulose filters life in which the efficiency is much lower than the end of the filters life.
So you are causing more harm than good here...
Except that none of that is accurate. It is NOT more harmful, I live in a dustbowl and must maintain a filter that is capable of removing contaminants from the air 12 months a year at optimum efficiency. Oh and the harmful silicon levels? Never once shown up on a UOA. As a matter of fact they have typically been 3x lower than "average." So what this means is that changing my air filter every 10ish thousand miles is actually helping my engine!
Originally Posted By: 2010_FX4
Originally Posted By: jk_636
What is this phrase, "over maintaining?"
If having a strict maintenance schedule is "over maintaining" then I am guilty as charged, but I do not understand the negative connotation you place on preventative maintenance. I dont buy new vehicles every five years like many Americans. When I take delivery of a vehicle, I am going to keep it for the long haul. You say I am "over maintaining," but in reality, I am taking proactive measures to keep my vehicle running at optimum efficiency and prepare it for the long service life that lies ahead.
I, like you, bought my 2010 FX4 brand new for the long haul, however, the difference is that I am using hard core
data to determine the maintenance window as opposed to (what you seem to suggest) as a "feel good seat of the pants" maintenance window (unless you have some data you have not shared). While UOAs do not show actual engine wear, they do show the wear metals and silicon levels generated in the oil. Take a look at all of the Pennzoil Ultra OCs (which were in the 5-7.5K range) and then look at the OCs which are 10K and above (including the conventional ones) and I think you will find the wear metals are lower per mile on the extended runs versus the shorter ones and in most cases there was still life left in the oil when it was changed.
I started my FX4s life thinking that short OCIs with a premium synthetic would be the be-all, end-all to ensuring a long engine life, I have learned from a few veterans here, that in the end, as long as the fluids are not overused, the engine life will remain the same. Thus far, that has held true and I plan to see how long the engine in the FX4 will last doing the same thing I have been for the last 40K or so and that is using a synthetic for the amount of time/mileage as dictated by the data. As a side note, look at the silicon in the UOAs and compare to the age of the air filter, at 80K use on a Napa Gold, I am starting to see a slight uptick on the silicon so I will be changing it soon. While some may say based upon my intervals I am "under maintaining" my FX4, the data clearly shows otherwise. There is a difference between a strict maintenance schedule and simply maintaining a vehicle based upon emotions/supposition--and there is nothing wrong with doing that, but see it for what it is.
Emotions and suppositions eh? Well, it appears we will have to agree to disagree. Let us postpone this debate shall we? We can pick it up in 20 years when we can both get together, break down our engines and compare results.