UOA with 3 20 minute track sessions on the left, 48 autox runs on the right. The track time used a Fram Ultra, that actually had autox use on it, and then when I changed the oil I didn't empty the filter, just left it on. The right is an Amsoil Ea15k20 I believe.

 

But which oil?

 

All oil tests on the Evo have been with Amsoil ZROD 10w30. Should have another Autox run with about 40 runs on it coming soon, with the same Fram Ultra filter.

 

It all depends on if you daily your car, weekend only car, track only (autoX, road race, drag race).

Manufacture fluids, or Amsoil, Redline, are all fine depending on use of vehicle.

I personally go by what is recommended by the people I've purchased parts from or had work done by.

Sheptrans recommends Qiaqueen in the Evo T-case and rear diff, Redline MT-90 in the trans.

FP recommends a high in zinc content oil. 10w-30 for stock internals and 20w-50 for built motors. So Brad Penn, Amsoil (any high in zinc), or any other brand that sells a type with high zinc content is fine.

I run Amsoil oil filters since they have tested to have the best filtration.

 

Ok - will post the UOA I just got when I get home BUT: this run is more equivalent (42 runs autox compared to the first run of 48 autox, instead of track). The AL went from 3ppm to 5ppm, Iron went from 3ppm to 4ppm. Silicon went from 5ppm to 10ppm, and sodium went from 3ppm to 5ppm.

A few questions:
Can I assume from the increase in contaminants that the oil filter did a worse job filtering? Air filter remained the same, and actually I put a sleeve on it later in the run. Only change aside from the obvious is the oil filter.
Do better filtering oil filters create better wear for motors by filtering out more contaminants?

I realize these are minor changes, and this is just one instance, but if the Amsoil filter did better, then no reason for me to give Fram Ultra another try.

Will update this post with the UOA when I get home

 

The particulates that show up during oil testing are at the molecular level, I don't think any filter on the market will catch them. The job of the filter is to catch **** large enough to create a problem.

 

....dude..... :P

 

so, as long as it's doing it's job, more or less the same?

lol idk! you'd think. from these results, I'd assume the fram ultra in this instance, in my case, did a slightly worse job filtering some silicon and sodium than the amsoil filter, and thus I'd stick with amsoil's filter.

 

i had to tease. if you read the question, without knowing what you meant, it was kinda funny haha.

bob the oil guy tested the fram filters, i think, and they turned out to be really good, IIRC?

 

it did, which is why I gave it a shot- it SEEMS from the results it filtered worse... and also I had worse wear. idk if the worse wear is from the increase in contaminants or natural variance, but there's no real reason for me to stick with this filter anyway.

 

well, there's cost (to some people). on one hand, if you track the car on a semi-regular basis, you are probably doing lots of oil changes. on the other hand, if one can't afford expensive oil filters, then maybe one shouldn't be racing a car LOL.
other than all that, i say go with what works best. it seems there are three or four really good ones and i try to keep at least one on a shelf at all times.

i've been checking out the K&N aluminum one.. that thing sounds really promising. i haven't seen any data on how well it works, for how long, etc.
i also, honestly, wouldn't even know which filter element to put in it LOL.

i make regular power and drive a regular car.. so i figure i'm probably over thinking everything anyway. people beat on our cars with Mobil 1 or less, all the time, and they keep on running.

 

Anything smaller than like 10 microns isn't going to do any more harm, so ostensibly yes.

 

here's the UOA

 

looks like i need to be drinking more used motor oil.

 

The numbers are all so small, I wouldn't worry about it. Yes, silicon doubled, but its still low. You really need to look for an upwards trend over 2-3 UOA's before I would worry about an issue.


This is why I don't do UOA's, I don't need yet another thing to over-analyze on my car. I'm bad enough with the random noises and rattles, and finagling with the tune...lol