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UOA - never did one - worthwhile to do one? #4673097
02/21/18 11:20 AM
02/21/18 11:20 AM
Joined: Oct 2015
Posts: 207
co
NissanMaxima Offline OP
NissanMaxima  Offline OP
Joined: Oct 2015
Posts: 207
co
Hi all:

I've never had a UOA done on any car I've owned and only heard about them when I joined BITOG. I have always maintained and treated my vehicles to the most stringent standards including Top Tier gas and changed oil regularly (and oftentimes probably prematurely). Therefore, is there any value for me to do an UOA on my two vehicles? One is my 1995 Maxima with about 70k miles the other is my 2015 Corolla with about 40k miles. Both bought new and 5w-30 Mobil1/Nissan filter used on Maxima and TGMO 0w-20 synthetic/Toyota filter used on Corolla. From what I understand on the articles on the site, a UOA isn't going to tell me the "condition" of the engine or perhaps the life left, but more so the condition of the used oil which is useful for OCI decisions (which really isn't a factor for me as the oil is changed before recommended mileage/time limits). Thanks so much.

Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673109
02/21/18 11:29 AM
02/21/18 11:29 AM
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
Kira Offline
Kira  Offline
Joined: Aug 2010
Posts: 5,933
Champlain/Hudson Valley
Pretty much my situation.

I believe you're on to the correct conclusion. Prematurely changed oil and filters of "today's" quality probably have done their job.
I'd bet an oil analysis would only tell you about metal wear endemic to a particular engine.

My plan is to change my oil today and do any topping off with the same oil. At 5,000 mi. (factory 7,500 mi. OCI) I'll have an analysis done.
I too do not know what it'll tell me.

Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673186
02/21/18 12:24 PM
02/21/18 12:24 PM
Joined: Jul 2012
Posts: 397
Michigan
khittner Offline
khittner  Offline
Joined: Jul 2012
Posts: 397
Michigan
Unless you're just curious about the various values, it's not worth doing. Your engines have loads of life (easily 150K+) left with your current maintenance regimen. UOAs aren't going to help you coax more life out of them.

Re: UOA - never did one - worthwhile to do one? [Re: khittner] #4673193
02/21/18 12:32 PM
02/21/18 12:32 PM
Joined: Oct 2015
Posts: 207
co
NissanMaxima Offline OP
NissanMaxima  Offline OP
Joined: Oct 2015
Posts: 207
co
Thanks folks. It would indeed be interesting to see the analysis but as I don't suspect any problems I've read about like coolant leaks, etc. AND I've been doing stringent maintenance, I think the expense is better put towards other necessities - like more Top Tier gasoline or an upcoming coolant change!

Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673194
02/21/18 12:32 PM
02/21/18 12:32 PM
Joined: Dec 2016
Posts: 202
Wisconsin
emmett442 Offline
emmett442  Offline
Joined: Dec 2016
Posts: 202
Wisconsin
Same here.

I take care of my stuff. I don't even go overboard: I change fluids per the manufacturer, I pump gas at the most convenient station, I don't use additives or boutique products, and I fix my car if/when it breaks. I keep my cars a LONG time (most get recycled when I'm done - rust has done them in by that point) but I've never blown an engine, therefore I'm not convinced that I should do anything differently.

So, if I'm set in my ways and won't change my habits, UOA results aren't worth much!


2011 Ford Crown Victoria LX 4.6L V8 auto
2009 Chevrolet Malibu LT 2.4L I4 auto
1974 Dodge D200 360 V8 4 speed manual
Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673291
02/21/18 01:41 PM
02/21/18 01:41 PM
Joined: Oct 2007
Posts: 597
TN
TTK Offline
TTK  Offline
Joined: Oct 2007
Posts: 597
TN
Never did one either. Don't plan on doing one either.


2010 Volvo V70-3.2
Current Fill:Castrol Magnatec 5w-30
2018 Subaru Forester, 0w-20 Subaru oil
2001 Chevrolet Prism:Castrol Magnatec 5w-30

Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673305
02/21/18 01:48 PM
02/21/18 01:48 PM
Joined: Mar 2010
Posts: 505
Chicago Suburbs
Nitronoise Offline
Nitronoise  Offline
Joined: Mar 2010
Posts: 505
Chicago Suburbs
UOA is a tool I use 1X per year just to see what is going on inside my fleets engines as they are scattered out through the Midwest and away at school where i quiz my kids on maint.

I has saved my bacon a few times finding leaking intakes and sucking antifreeze into the oil on my GM 3.1 and 3.8 motors and it was a good tool to help detect a cracked head-gasket in my sons old jeep for your cars its around 50 or 60 bucks for 2 samples and you will sleep better at nite , at least I do


07 Ford Freestyle 135K
04 Hyundai Sonata 280K
03 Hyundai Santa Fe 165K
02 Ford Tarus 98K
00 Buick Regal SC 135K
95 Goldwing 28K

Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673315
02/21/18 01:55 PM
02/21/18 01:55 PM
Joined: Oct 2009
Posts: 3,509
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,509
Wet side WA
UOA will tell you the life left in that oil not the engine. If you change the oil as required under your warranty you will never use up a good full synthetic. But the problem with a UOA is it will cost you just as much if not more than a DIY oil change.


2004 Corolla 126649
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74478
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: UOA - never did one - worthwhile to do one? [Re: Nitronoise] #4673316
02/21/18 01:55 PM
02/21/18 01:55 PM
Joined: Oct 2012
Posts: 519
SW Fla
dernp Offline
dernp  Offline
Joined: Oct 2012
Posts: 519
SW Fla
Save your money. UOA sometimes get way over analyzed and some folks don't sleep when they see 1 ppm increase.


2014 Honda Civic 1.8 28k TGMO 0w20
2016 Honda Civic 1.5T Mobil 1 0w20
2011 Tundra 5.7L 83k TGMO


Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673365
02/21/18 02:41 PM
02/21/18 02:41 PM
Joined: Dec 2017
Posts: 1,310
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,310
US
Originally Posted By: NissanMaxima
Hi all:

I've never had a UOA done on any car... a UOA isn't going to tell me the "condition" of the engine or perhaps the life left, but more so the condition of the used oil which is useful for OCI decisions (which really isn't a factor for me as the oil is changed before recommended mileage/time limits). Thanks so much.


You sir, have answered your own question.


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w30/Wix

Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673367
02/21/18 02:42 PM
02/21/18 02:42 PM
Joined: Mar 2017
Posts: 6,483
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,483
...
My understanding of this is that the uoa is not meant as a snapshot of engine health but a tool to be used to discern trends.


Cannot see signatures any longer so it doesn’t matter.
Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673518
02/21/18 04:35 PM
02/21/18 04:35 PM
Joined: Mar 2014
Posts: 3,473
NJ
Leo99 Online content
Leo99  Online Content
Joined: Mar 2014
Posts: 3,473
NJ
I don't see any point to them unless you just dig on oil.

In my opinion, engines will last a long, long time with proper oil changes. It's the seals that wear out and leak that kills them. At least that's been my experiences.

I'm going to pull an ATF sample when/if my Rav4 hits 365k miles. Just wanted to get a data point at 100k miles past the last one. Blackstone put it in their newsletter and said to change it out. I haven't touched it and might was send them the sample to add to the body of knowledge.

How many people actually change what they're doing based on a UOA?


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles (RIP)
2004 Corolla 125,000 miles
2004 Rav4 370,000 miles
2015 Camry 70,000 miles
Re: UOA - never did one - worthwhile to do one? [Re: Leo99] #4673640
02/21/18 06:24 PM
02/21/18 06:24 PM
Joined: Feb 2010
Posts: 391
Grand Rapids, Michigan
Toto Offline
Toto  Offline
Joined: Feb 2010
Posts: 391
Grand Rapids, Michigan
Nothing wrong with someone doing a UOA for fun & curiosity, there are many different hobbies a UOA can be one of them.
TOTO.

Last edited by Toto; 02/21/18 06:27 PM. Reason: Misspelled

AMSOIL-OE 0W 20-XL 10W 30-AGL 80W 90
NAPA GOLD
Re: UOA - never did one - worthwhile to do one? [Re: NissanMaxima] #4673760
02/21/18 07:40 PM
02/21/18 07:40 PM
Joined: Sep 2009
Posts: 16,183
OH
fdcg27 Offline
fdcg27  Offline
Joined: Sep 2009
Posts: 16,183
OH
To me at least, UOAs are all about entertainment.
The only one I've ever posted that surprised me was one from my old BMW, which showed much lower wear metals than I would have expected.
The rest were more confirmations of what I already knew.
Still, they're fun to do occasionally and can alert you to developing problems.
They're also less than twenty bucks if bought in some volume from Polaris, which may be a better lab than that which shall not be named.


18 Accord Hybrid FF
17 Forester 18K VME 0W-20
12 Accord LX 96K SSO 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

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