UOA - Usless Oil Analysis?

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So basically without ferrography, you simply don't know the type of wear that is occurring. I guess in an ideal world, you want low wear metals via UOA and a clean ferrography report.

Hypothetically, you could have above normal/above normal wear via oil analysis, but low critical wear. Very interesting.
 
Originally Posted By: Gary Allan
Originally Posted By: theedge67
So...where did the lead come from? Did you drop some bullets into the oil??



The Black Knight: It's just a flesh wound.


Whats the air speed of a fully laden swallow?
 
Originally Posted By: bruce381
Originally Posted By: Gary Allan
Originally Posted By: theedge67
So...where did the lead come from? Did you drop some bullets into the oil??



The Black Knight: It's just a flesh wound.


Whats the air speed of a fully laden swallow?


African or European?
 
Originally Posted By: bruce381
Originally Posted By: Gary Allan
Originally Posted By: theedge67
So...where did the lead come from? Did you drop some bullets into the oil??



The Black Knight: It's just a flesh wound.


Whats the air speed of a fully laden swallow?


Very complex technical tribological and rheological comment!
 
In my case, I can only guess where the lead came from. I had removed the turbo (temporary turbo removal for overhaul) and switched oils to a thin oil, a 20W M1 flavor.

After putting the turbo back on, changing the oil a couple of times and then doing a UOA, I saw some horrible numbers.

I overhauled the turbo myself, so I am sure that there was no known lead contamination in the overhaul process. It was simply assembled dry, and then engine oil was poured into the oil inlet. Even so, the UOA was a few changes later.

By the way, the Miata bearings are aluminum.



Chris
 
Here is ANOTHER engine saved from those useless Oil Analysis.

I just laugh when I see some folks here just think since they are paying $$$ for Syn oil that there is no need to do a UOA.

"Why waste the $$ for a cheap $20 UOA, they don't tell you anything and I'd rather just put that $$ into more oil"

(Everyone knows that if you spent $50 for a UOA, its going to be better by 2.5 times than a $20 one just like $6 a quart oil is six times better than $1 oil)

That is BITOG math according to some of our members...
grin2.gif


Here is a guy who has had the car since new.

UOA on Nissan Xterra

Bill
 
A $20 UOA will detect some problems but not others as the thread indicates. I don't have the links anymore but the typical UOA also doesn't seem to pick up sludging as some sludged engines have exhibited 'good' UOAs in this forum. With the typical UOA not detecting some types of problems that generate mainly larger particles, not reliably detcting sludging, and not being able to measure the metals left inside the engine, the amount of divining and typical conclusions drawn around here seems unwarranted.
 
Forgot to mention that when UOAs are performed on a regular basis during long oil change intervals, such as a popular M1 study, the amount of metal added during each interval goes negative with some samples.
 
Originally Posted By: 1sttruck
A $20 UOA will detect some problems but not others as the thread indicates. I don't have the links anymore but the typical UOA also doesn't seem to pick up sludging as some sludged engines have exhibited 'good' UOAs in this forum. With the typical UOA not detecting some types of problems that generate mainly larger particles, not reliably detcting sludging, and not being able to measure the metals left inside the engine, the amount of divining and typical conclusions drawn around here seems unwarranted.


Very true.
 
Quote:
I just laugh when I see some folks here just think since they are paying $$$ for Syn oil that there is no need to do a UOA.


The only people I know that say that are Amsoil dealers. Most people on here know not do run an oil that long without doing oil analysis.
 
I'm 1. I don't think persons running 6-7k per year on a quality synthetic need to do a UOA. I can check my oil and fluids levels just fine.
 
Quote:
I am the Manager of Product Development at Red Line Synthetic Oil Corporation and have held that position for 20 years. I would like to clarify some of the analyses that have been posted in the forum you moderate. I have many issues to discuss here and hope that you don't take offense to my criticism. I am not angry with you and I realize that you have been advised by oil analysts which may not completely understand certain differences which are characteristic of Red Line.

Perhaps the greatest issue I have is an analysis of 2007 FXSTD; 6500 miles. This one is easy. That is not Red Line Oil. I have been in charge of all formulations for the past 20 years, and that formulation has never been created in our manufacturing plant. It could not have been put into a Red Line bottle. We typically have greater than 500ppm Molybdenum and little or no magnesium in our lubricants. At least once a year, I get an analysis back from an analytical lab which is not what I sent. Samples can get switched in analysis. Samples can get put in the wrong container when sampling, and products can get in the wrong bike during installation. What I can guarantee is that the analysis posted is not Red Line.

Then this wrong analysis causes the chemist to be "Blown away" at the lack of consistency of Red Line. I would appreciate a reassessment of that statement in light of this knowledge.

I also take issue with his statement that Red Line is an inferior basestock with a pretty good additive package. His only reason to doubt the superiority of the Red Line basestock is because of the oxidation number of 106. That is an erroneous number. Red Line contains a significant amount of synthetic esters which have very great thermal and oxidation stability. Those esters absorb at the same wavelength as organic acids, which are a result of oxidation. What he is seeing is not oxidation, which he simply assumes, but the absorbance of the ester in the FTIR testing. His assessment is wrong and thus his comments about the inferiority of Red Line's base stock are wrong. He must use the same product unused as a baseline to do a differential IR scan. Even with that, differences in evaporation of various components during use will cause differences in the FTIR scan to make oxidation very difficult to measure using FTIR when esters are present. If oxidation is occuring, acids will be created and they will neutralize the TBN. If there is significant TBN, then there cannot be significant oxidation. TBN can also be depleted by NOx, but that is another wrinkle, but it can be said that if there is still TBN, then significant oxidation did not occur.

Another analysis to discuss is the 2007 FXSTD 6,600 miles.

The viscosity of the product has nothing to do with water being emulsified and more-or-less bonded with the oil. This lubricant is in physical terminology "thixotropic" and has a high apparent viscosity under certain testing. The water may be from condensation, but more likely from a very good hosing down. This water would be evaporated during high-temperature service. His assessment that this base is a diester is totally false. This is not a diester lubricant, but does contain polyol esters, which have little affinity for water also. Left open, these esters will have only a few ppm water, much less than the 50,000ppm shown.

There was another analysis 2007RK Classic; 4974 miles

This appears to be a mixture and something else, probably 80% Red Line, but we have no boron in our oil and usually only 10ppm magnesium, and approximately 3500 ppm calcium, and 1400 ppm Phosphorous in this product. I only bring this up because some readers may find that level of phosphorous unsatisfactory.

The last issue is with 2005 Sportster

The assertion of the chemist that he did not have a baseline because Red Line is not a "certified" oil is not true. The reason he did not have a baseline is that he never purchased a baseline. That is all he would have to do.

I hope you can help rectify some of these issues, especially the inconsistency issue. If you have any questions about this, email me at [email protected] or call me at 707-745-6100. Thanks for your time.

Regards,

Roy Howell
Manager of Product Development
Red Line Synthetic Oil Corp



Nov 9, 2007, at 7:19 PM, I replied:
Thanks for taking the time to contact me. I live and breathe Harley-Davidson motorcycles and that's why I volunteered to moderate on this site. I am no expert on oils, but simply as self-educated as I can get in order to help me choose wisely. I ended up with moderating the oil section because I had a bit more knowledge than the next choice! I work in a power plant with emissions equipment, and have some experience with various gas analyzers and water analyzers. I also acted as the backup to the plant chemist and know first-hand that it is very easy to get samples messed up, contaminated, mixed up.
With your permission I would like to attach this e-mail directly to the UOAs. I think that would be the best way to ensure anyone looking at the information can get as accurate a picture as possible.
Again, thanks for contacting me. We've had others who said they were in the industry take exception to things that have been posted, but they were very cryptic and would provide no relevant information to clarify any possible misinformation. It is refreshing to hear from someone who has taken the time to provide explanations that we can understand.

Skip


Nov 15, 2007
Skip:
I understand your position as a moderator of this forum and I appreciate your offer to attach this, it would be helpful to us to clarify some of the information taken out of context. Oil analysis can be a very useful tool for evaluating the condition of equipment and can help determine the useful life of lubricants, but there are many discrepancies which must be considered. First, the accuracy of the elemental concentrations is in the range of +/- 15%. This is because finding the appropriate standard for the various formulation in the market is very difficult. If you needed a very precise number, that could be evaluated, but it would cost around $100 per element. You get a very good value for the price they charge, but it cannot be assumed to be "accurate", only "reasonably accurate". Another issue is that particles with a size greater than 5 microns are very difficult to detect by spectroscopy. It is entirely possible that a product with low wear numbers actually has much greater wear. It is very difficult to evaluate different lubricants by the oil analysis numbers, because of the sensitivity of oil analysis to particle size, and how operating under different conditions and different formulations can cause the wear particle distribution to change considerably. Oil analysis is great for monitoring the condition of equipment on a regular basis, and is useful once a good baseline for the equipment has been established and it is useful to alert you when a problem begins to arise. Thanks for your helpfulness and I hope this can clarify some confusing issues.

Regards,

Roy Howell
Red Line Synthetic Oil Corp


http://www.hdforums.com/archive/threads/used-oil-analyses-uoa-2061824-1.html
 
Originally Posted By: FZ1
I'm 1. I don't think persons running 6-7k per year on a quality synthetic need to do a UOA. I can check my oil and fluids levels just fine.


Well, you're right. They don't have to. They don't have to use fuel injector cleaner or rotate their tires ..or a bunch of other stuff. They'll live to talk about it. But ..it's not something that's going to break the bank and may show you something that can save you substantial amounts of money in avoided costs.

I ditched my profit for an SSO customer so that she could get a UOA. It showed her that her 3.1 Lumina had the infamous intake gasket leak. I researched the costs for her and offered the generic version of the GM coolant tabs as a stop gap remedy for her. She agreed and will seek another UOA in a couple of months to assure that the condition is being held in check.

A UOA costs less than most shops 1/4hour rate ..but if you ditch a car every so often ..then it probably doesn't matter.
 
Originally Posted By: buster
Quote:
I just laugh when I see some folks here just think since they are paying $$$ for Syn oil that there is no need to do a UOA.


The only people I know that say that are Amsoil dealers. Most people on here know not do run an oil that long without doing oil analysis.


Huh?
 
Huh? I don't think people running 1 year oci's of 6-7K using quality synthetics need a Uoa to do so. What do you think?
 
Originally Posted By: FZ1
So,then,a quality synthetic, like say, Amsoil can't go 1 year or 6-7K?


Sure it can ..but I'm not going to just blindly say that I'd recommend it. There are some conditions where you wouldn't recommend any synthetic nor recommend any extended drain. Not that the oil wouldn't make the distance/time finish line ..but that it didn't make economical sense to use it. Much depends on what the customer's goals are.

Take that Lumina owner, for example. She needed a "set it and forget it" oil change. She knew how to check her own oil and add it (she ordered an extra quart). She did enough mileage to warrant the cost. No problem. The only issue was outside of the oil's ability to do its job. It was a design problem.

Quote:
The only people I know that say that are Amsoil dealers. Most people on here know not do run an oil that long without doing oil analysis.


Even the OEM doesn't recommend UOA ..even where an OLM may say 14k before indicating it's time for a change. None of the Euros that have the longer drain recommendations state it as a must do ..or even an optional thing. Unless your a BIG diesel owner or fleet operator ..I just don't think UOA is focused on too much.

Naturally, Pabs and I do recommend it.
 
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