Originally posted by PismoTaco:
Toy4x4Guy-
Yes, having my 25,000 mile oil change intervals do justify higher oil costs per quart. It is much much cheaper for me since I only have to change my oil once a year. And yes, you have the oil analysis that shows that this is perfectly fine. Plus I don't throw out gallons of good oil a year.
You say you do lots of research.. Then you would know that in EVERY study shows that a K&N on average lets in more dirt than a foam or stock filter. You may not show much dirt in your oil, but if you ran one of the others you would show less dirt or oil.
You only selectivly use what research or facts you agree with and toss out the others.
-Chris
You and I hashed this out on the Tacoma board months ago and finally had to agree to disagree. I will encourage you to leave the K&N debate on that board as I'm sure the people here do not want to see it all over again.
I started doing analysis to prove that the K&N in MY Tacoma, in fact, was filtering. I had 13ppm (that's parts per MILLION) of dust in my oil after 5,000 miles of dusty conditions. That is "negligible" according to the analysis lab, so having even less was not a concern. SO, let's drop the K&N debate never to discuss it again, we're talking about oil here
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Second, actually you never sent me a 25,000 mile analysis, but I doubt it would be "OK". The Analysis you did send me with a mere 11,000 miles on it was borderline for an oil that is advertised to go for 25,000 miles or more (Amsoil)
. Your nitration level was already at 37% which is close to being too high. The comments on your analysis also stated this. Amsoil oil may be ok for 25,000 miles in certain vehicles, but obviously not for the 3.4L Tacoma motor. Many others who had their oil tested on the Tacoma had similar results. 16,000 miles ended up being the "usual" max life of the Amsoil oil on that 3.4L motor. To me that DOES NOT justify the $9.00 a quart for the oil, especially since the 3.4L holds 5.5 Quarts, not to mention whatever you have to add when doing the filter changes PLUS the cost of the premium filter.
I'm going to be testing my oil in the new Xterra. Every engine manufacturer will be different. Once I have some numbers on the Xterra I'll post them here. The main thing on the Xterra, is that oil changes are a MUCH easier job. The oil filter is very simple to get to and is actually mounted in such a way that spillage will be nill.
For those that want to take a look at the actual oil analysis I have posted may do so
HERE