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2023 Hyundai Kona Limited AWD (wife) / 2025 VW GTI (me) / 2019 Chevrolet Cruze Premier RS (daughter #1) / 2020 Hyundai Accent SE (daughter #2) / 2023 Subaru Impreza Base (son)
Yes- let’s just dismiss any data that contradicts our 50 year old OCI philosophy.
Hacks.
What’s the point of UOAs if they don’t detect factors that impact engine longevity?

All I know is that I ran the MS3 to nearly 160k miles with no issues and the X3 past 200k miles with no issues- and in both cases the UOAs were stellar. Then there’s my son’s E90 at 108k miles. It saw a minimum OCI of 15k miles using BMW TPT 5W-30- which according to the YT “experts” should have expired long ago:
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
Yes- let’s just dismiss any data that contradicts our 50 year old OCI philosophy.
Hacks.
What’s the point of UOAs if they don’t detect factors that impact engine longevity?

——————————————————All I know is that I ran the MS3 to nearly 160k miles with no issues and the X3 past 200k miles with no issues- and in both cases the UOAs were stellar. Then there’s my son’s E90 at 108k miles. It saw a minimum OCI of 15k miles using BMW TPT 5W-30- which according to the YT “experts” should have expired long ago:
I’ve said it before and I’ll say it again, if I had a vested interest in selling oil, I’d recommend more frequent oil changes too. If your car needs an oil change more frequently than 7,500 miles, you have the wrong car, you’re using the wrong oil, the wrong filter or all three.
jmonroe
'18 Legacy Limited with 3.6R (Mrs. j's)
2019 Kia Soul+, 2015 Mustang GT, 2013 Ford F-150, 2000 Chrysler Sebring convertible
What’s the point of UOAs if they don’t detect factors that impact engine longevity?

——————————————————All I know is that I ran the MS3 to nearly 160k miles with no issues and the X3 past 200k miles with no issues- and in both cases the UOAs were stellar. Then there’s my son’s E90 at 108k miles. It saw a minimum OCI of 15k miles using BMW TPT 5W-30- which according to the YT “experts” should have expired long ago:
I’ve said it before and I’ll say it again, if I had a vested interest in selling oil, I’d recommend more frequent oil changes too. If your car needs an oil change more frequently than 7,500 miles, you have the wrong car, you’re using the wrong oil, the wrong filter or all three.
jmonroe
There’s something to say for the peace of mind that more frequent OCI gives you. Yes you can send out for oil analysis instead of changing the oil but I wonder if it wouldn’t be cheaper to just change the oil on a set schedule of 5k miles.
Personally, I’d feel better knowing I did the change rather than staying awake at night wondering is some dreaded wear gremlin was out in the driveway chewing it’s way through my engine.
2019 Kia Soul+, 2015 Mustang GT, 2013 Ford F-150, 2000 Chrysler Sebring convertible
There is significant pressure from the marketing department to advertise low maintenance costs and long intervals. I'm changing my transmission fluid, thank you very much.
The "youtube" part aside, mechanics see the the real-world mayhem that can come from old oil in certain use cases. Manufacturers do all sorts of testing but can't really replicate customers like me who run their engines cold winter after winter because of a short commute. An oil life monitor might catch that, but my 21 Impreza doesn't have one. And it has 6k intervals from the mothership, synthetic.
My 17 Grand Caravan has a 10k OCI but after I learned about valvetrain failure and lifter tick on the Pentastar 3.6, I went to 6k intervals. It's cheap and I do it myself. So far it's been the most reliable car I've ever owned -- at 155k miles.
cheers -mathias
That is not the point of the UOA. I mean, yes, you can zero in on a "correct" interval for your use case, but the peace of mind that the UOA provides is to detect potential problems before they become terminal ones. And, that is true peace of mind .... something that more frequent oil changes cannot provide.
As an example, I would have had no idea that I had a coolant leak issue on my Q7, probably to this day, were it not for UOA. And, at this point, it probably would have been going on long enough to be causing real damage to the engine. As it was, the analysis was able to detect an anomaly basically as soon as it started (within the year, anyway), which meant I had the opportunity to find and address the problem while it was still superficial - no damage done!
I can easily justify the cost of the UOA by *also* running longer intervals, because, for me, UOA is $40 while an oil change is about $60-$100 (depending on the vehicle), but that doesn't mean it is a given or necessary association. Plus, only doing oil changes during AMW is a wonderful quality-of-life improvement over watching the odometer for a specific target and then changing it... likely in the cold, laying on my back on the snowpack....
I guess they do know what they’re doing.

25 NX 450h+ / 24 Sienna Plat AWD / 21 Boxster GTS 4.0
I like having all of my vehicles on the same interval, so if I were doing it based on distance, I would likely just set a "safe" range for all the vehicles and just do them all at that time; way easier to track!
I think I told this story before but I’m not sure.
Back in the early 70s, changing your oil at 3K miles was not unheard of. Oil was not what it is today so I followed that guideline religiously. At the time, I was driving a 68 Olds Delta 88 Custom with a 455 CID V8.
I worked with several guys that did their own car maintenance and stuff around the house too. We were young and starting out in our careers and liked to save money by being DIYers. It wasn’t unusual for us to talk on Friday about what we planned to do that weekend. Then talk about how it went on Monday. It just so happened I planned to do an oil change on Saturday and I mentioned that I was a couple hundred miles under 3K miles but I was going to do it anyway. Most of the guys gave me one of those looks and said, “isn’t that a little early even for you”? I agreed but it was going to
be a nice Spring day so I figured why not get an early start on the new season.
So on Saturday morning at about 8;30 I’m getting ready to jump into the stack of pancakes Mrs. j made for me when we hear a knock on the door. We gave each other a surprised look and Mrs. j said she would see who it was. She looks out the living room window, returns and says, “that looks like Ed Wilson, the guy you work with and he has something in his hand”. I’m thinking what could he be doing here, he said he was going to get in an early round of golf before doing some yard work. Anyway, I go to the door and sure enough, it’s Ed and he has a Prestone anti freeze jug in his hand. I said, “what happened, did you spring a leak on your way to the course (he had to pass my house on the way to the golf course) and you want some water”? He replied, “nope, I want your drain oil.” Wise axx.
jmonroe
'18 Legacy Limited with 3.6R (Mrs. j's)
I’ve said it before and I’ll say it again, if I had a vested interest in selling oil, I’d recommend more frequent oil changes too. If your car needs an oil change more frequently than 7,500 miles, you have the wrong car, you’re using the wrong oil, the wrong filter or all three.
jmonroe
There’s something to say for the peace of mind that more frequent OCI gives you. Yes you can send out for oil analysis instead of changing the oil but I wonder if it wouldn’t be cheaper to just change the oil on a set schedule of 5k miles.
Personally, I’d feel better knowing I did the change rather than staying awake at night wondering is some dreaded wear gremlin was out in the driveway chewing it’s way through my engine.
I haven't lost a second of sleep- why would I? In 49 years of vehicle ownership I have yet to experience an oil related failure.
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
I filled up the Integra for the 1st time today. It averaged 31.3 mpg over its first 330ish miles. The Integra’s quick steering and sharp reflexes continue to impress me. I have noticed the resolution on the backup camera isn’t crystal clear, it looks downright grainy at night. It’s a fun commuter.
2001 Prelude Type SH, 2022 Highlander XLE AWD, 2025 Camry SE AWD, 2025 Integra
That was quick!
2001 Prelude Type SH, 2022 Highlander XLE AWD, 2025 Camry SE AWD, 2025 Integra
That’s what she said.
Nobody laugh. It only encourages him.
25 NX 450h+ / 24 Sienna Plat AWD / 21 Boxster GTS 4.0
"The Luxury Electric Vehicle Is in Trouble
By Neal E. Boudette, Nov. 13, 2025
...In October, U.S. electric vehicle sales fell about 33 percent from a year earlier, to 64,500, according to estimates by J.D. Power. Sales of the F-150 Lightning fell 12 percent, to 1,543 vehicles. Acura sold just 25 ZDXs, down from more than 1,200 a year earlier.
“A lot of people thought that the high-end, luxury E.V. segment was going to be sustainable and it would continue to grow,” said Jessica Caldwell, vice president of insights at Edmunds, a market researcher. “But with all the changes that have come to the industry, it’s just not as big as we thought.”
While the $7,500 tax credit was a relatively small discount on luxury cars, it helped automakers come up with lease deals that attracted affluent car buyers. Another factor in leases is the expected value of a vehicle after two or three years on the road. The values of previously leased electric models have been falling, and that has pushed up monthly payments on new leases..."
Impressive job by CarMax. A quick almost $8K. Then I'm sure they made money on the financing and sold a warranty too. It is just beyond me that they were able to sell the car for $46,998 and a brand spankin' new one has an MSRP of $47,545.
2001 Prelude Type SH, 2022 Highlander XLE AWD, 2025 Camry SE AWD, 2025 Integra
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2017 Cadillac ATS Performance Premium 3.6
Anyone know exactly what cargurus does?
2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.
That’s if you can find one, much less at sticker. I’m sure there are buyers out there that would prefer to deal with Carmax’s relative transparency. If anything, it’s probably the only time you’ll get to actually test drive one.
25 NX 450h+ / 24 Sienna Plat AWD / 21 Boxster GTS 4.0
I think what that trend shows is simply that idling isn't good for your car. WHO KNEW?!
Hyundai has a long warranty. And calls for short change intervals. 3,000 or 6
Months severe use and 6,000 or a year normal IIRC from when I owned one.
2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.
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I did not say why they called for it.
2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.
2001 Prelude Type SH, 2022 Highlander XLE AWD, 2025 Camry SE AWD, 2025 Integra
I agree but I don’t know how they do it.
When I decided to get Mrs. j’s the 2018 Subie Legacy Limited 6 cylinder she has now (bought in 2019 from a very reputable used car lot), that meant her 2012 Subie Legacy Limited 6 cylinder with around 33K miles had to go. The dealer dug in and wouldn’t come off his price which was $500 more than I wanted to pay so I left. Decided to see if Carvana would actually give me just a tick over 2 grand more than the dealer offered. I thought for sure when the guy came to get the car he’d start playing the game and offer me something less. But, he didn’t, he even commented about how nice the car was and seemed to be in a hurry to leave before I changed my mind.
I called the dealer after the check cleared and asked if the car was still available and at the last price he gave me for it but I was no longer interested in trading in the 2012. The salesman I was dealing with was on his day off but another salesman told me the car was still available and at the price I had been given. They started the paperwork work and I told them I’d be in the next day.
I showed up the next day and the first salesman was there and completed the paper work. Just so he knew Carvana beat their price and by a good amount but not to rub it in, I showed him a copy of the check Carvana gave me. He seemed a little surprised and said something like, “I’m not surprised they beat our price because your car was easily worth $500 more than we offered you.” He went on to say that after I left, he had a discussion with his boss (the owner), about giving me the $500 more that I wanted but the boss just dug in and refused to listen to him.
The best part of this is when he went on to say they screwed up and while they made the sale of their car, they lost the chance of selling the 2012 because they could have made a good quick buck doing that. He actually said the boss screwed him out of making an easy sale. Sometimes digging in for the sake of digging in will cost you.
jmonroe
'18 Legacy Limited with 3.6R (Mrs. j's)
Go ahead, rub it in.
jmonroe
'18 Legacy Limited with 3.6R (Mrs. j's)
Now, for our 2025 Tucson Hybrid Limited, they say 8000 miles or 1 year for oil changes.