Amsoil SSO 0-30w,18.7k miles,2007 Toy FJ 4.0 L

[Artem]

I personally think 15k would be a good interval for you, based on these two reports. It would leave you with plenty of room for error and a good safety buffer.

It's interesting to compare the results between the two labs. Thanks for posting.

 

[Pablo]

Originally Posted By: jetman

Oil Analyzers Inc Lab Comments: Oxidation results indicate OXIDATION is SEVERLY HIGH; Total Base Number is SIGNIFICANTLY LOW; Silicon is at a MODERATE LEVEL; SILICON sources can be abrasives (dirt, Alumina Silica), seals and gasket material, lube additive or lube supplement, and/or environmental contaminant; Change oil and filters if not done when oil sample was taken.

I'm now thinkin about cutting back the OCI to 9-10mths and/or 15k miles. I don't like the silicon #s.

Now, what do yawl think?



Pretty decent agreement between labs. I will say that OAI is full of poop on the Oxidation #. The virgin oil is about 50. I'm not sure why they do that. No mention of the virgin oil and they get the consumer spun up needlessly. If people say OAI numbers are made up to make Amsoil look better, this simply is not nor has ever been the case.

The Si is up there. You'll need to ID the source.

 

[jetman]

I know the SSO virgin oxidation# isn't 50, because our other car had a oxidation # of 40 after 9000 miles. 40 was OK w/OAI.

It appears to me that Oil Analyzers Inc(OAI) takes a more conservative approach, maybe since it's their product and want to limit their liability and/or sell more product sooner than later.

Who knows? I don't!

 

[Pablo]

That's odd, I've seen it range from 40-60 virgin.

I do know - the results from "OAI" aren't influenced at all by Amsoil, conservatively or otherwise. The lab that actually ran your test was Polaris, strangely they don't know anything more about Amsoil motor oil than other motor oils. Amsoil has a contract for their services, so they get a lower rate.

 

[jetman]

Does anybody have an explanation why Blackstone says that the oil is still good to go for another 2k miles, and OAI says it's "Critical" and needs changing?

 

[Pablo]

Originally Posted By: jetman
Does anybody have an explanation why Blackstone says that the oil is still good to go for another 2k miles, and OAI says it's "Critical" and needs changing?


In my short version OPINION (and I do mean opinion) - Polaris is using the oxidation # (a bit wrongly IMHO) and TBN as a gauge. Blackstone (who use a different TBN test method) sorta looks at the UOA as a whole and applies a little fuzzy logic (not always a bad thing) and says (basically) OK, good for a conservative 2K more.

 

[slalom44]

Blackstone goes primarily by TBN, not oxidation. That's why they recommend going another 2,000 miles. And since your wear metals are low, I can see why there's no concern. After all - another 2,000 miles is only around 10% additional miles.

Nice UOA. I agree, you should try to find the source of the silicon. The bypass filter is doing a great job. IMO, you should be safe with 20K OCIs.

 

[Artem]

Originally Posted By: jetman
Does anybody have an explanation why Blackstone says that the oil is still good to go for another 2k miles, and OAI says it's "Critical" and needs changing?


Blackstone suggests that the oil is done when the TBN reaches 1.0 and will recommend continued use if you still have some TBN left before reaching the 1.0 limit.

Every report I see from other labs always have SEVERE this SEVERE that with an oil change recommended ASAP. I've yet to see one where they suggested continued use. I'd have to send in a sample with 500 miles to get an ok to keep using the oil and even then that's a maybe.

I heart B/S labs. Lol.

 

[Texan4Life]

great report... Silicon is interesting. In all of my vehicles the silicon lvl has always been above avg. no matter what I try to do. I have never had mine that high, be then I have never run past 12k.

I gave up and just chalked it up to living in a rural area with a gravel road and around plowed heavy clay farmland

 

[ltslimjim]

Even with the level of Si 'present', your Iron(fe) dropped.

Great combo you have going. I'd settle in at around 17,500 or 1 year; what ever comes first, in this app. Check again to see if the bypass improves TBN retention over time. Definitely see if Si drops!

EDIT: Actually, your Si numbers aren't extreme per 1,000 miles. It's the accumulation over the extended drain. You 'could' get better. I'd shoot for less than 2 ppm / 1,000 miles.

 

[jetman]

Secondary Air Filter?

What's up with this??????? Why is it in there??? and why isn't it replaceable????

I have a early 2007 stock 2wd Toyota FJ Cruiser 4.0L. I don't do any off roading. We live in the country and it see's mostly hwy 55-60mph driving or less. I'm trying to lower the silicon level. In Dec of 2010 it was 56ppm(moderate), so I changed the oil and filter, installed a bypass system, replaced the K&N element w/Amsoil EaA238 element. Now, a yr later(2 wks ago),Dec of 2011, oil analysis shows silicon at 70ppm(moderate). I went looking for induction leaks again and determined there still aren't any.

The photos below shows the stock factory non-removable secondary filter. It is located just downstream from the replaceable filter element.

I think the non-replaceable downstream element is slowly disintegrating, thus sending debris into the engine, and showing up as silicon on my oil analysis, so I have removed it. I have installed a new Fram air filter element, and changed the oil and filter. I'm good to go for another 10-12 mths, 15-18k miles, at which point I'll do another oil analysis to see if any of this has helped.

What are your thoughts on removing this secondary element? Please don't post if all's your gonna tell me is to change my oil more often.

Thanks

Don B

 

[Artem]

Is Silicon something that accumulates as the miles rack on? I mean, you only have like 14ppm per 5,000 miles, which isn't bad and is not worth chasing down.

Now if silicon doesn't accumulate with miles, then it's worth investigating / experimenting with different things, like the mesh screen you're doing now.