Post your latest oil change

Why not run both cars on Amsoil
A more pertinent question might be why run anything special in either car?
These are both NA PI engines that make all of 70 bhp/liter, so it's not as though either engine is especially stressed.
Our usual driving isn't very stressful either. I doubt that either engine sees redline more than once a year if that, since it's not much fun without a stick.
When I drove a stick it would see redline at least weekly if not daily.
 
Latest oil change was yesterday & a mistake.

Dropped my F150 off at a friends shop to get the rear power window replaced(leaked & shorted the electronics). While there his service writer had checked the box in their service program to change the oil. They dumped 7qts of HPL PCMO 5w-40 and removed the Micro Guard Select filter that had 2-3k miles on them & poured in 7qts of Castrol GTX 5w-20 syn blend with a motorcraft filter. Called my friend this afternoon about it. He apologized profusely & offered to credit back my card, special order HPL & do another oil change or whatever credit I'd like. Told him to just give me a free service on my FIL 2020 Mustang GT & call it even (I have more HPL at home anyway).
Changed out the Castrol GTX 5W-20 syn blend. Used up my quart containers of HPL HDMO CC 5W-40 (6.5qts) & instead of opening a new gallon container decided to use the last 1/2qt (ish) from an open HPL PCMO 5W-40. Reused the motorcraft filter since it only had 90mi on it.

Doesn’t really matter at this point but truck has 77.2k miles with 90mi on this last, inappropriate, OCI.

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2022 Acadia 3.6L, 44,200 kms on car, 13,600 on oil. Oil life 1% left. No oil added between oil changes, down 1/2L.
Out; 10W40 GTX API SP.
In Duron 10W30 UHP synthetic.

I took a sample of the GTX for a used oil analysis. The fuel dilution will be interesting.
Fuel dilution was 6%. I guess that’s to be expected for a Di engine even with 70% highway. The viscosity @100C was out of grade @12.1, partly from the fuel and the rest from VII shear. 40C was 78.4 which would be good for a 10w30. I tried 10w40 pcmo in a LML duramax 11 years ago and it sheared down about the same with no fuel dilution, so who knows? You get what you pay for, and conventional 10w40s are famous for ending up out of grade at drain time.
Aluminum 4 new oil 4, so there’s nothing going on there.
Silicon 13 new oil 6, blame the K&N air filter.
Silver 13 new oil 6.
Fe 11 and Cu 6. Ok in the wear department for 13,600 kms. The copper could be from the oil cooler.
They did partial counts: 4u 33,530, 6u 3,613 21u 4. 22/10/12 total, but we don’t know how clean the new oil was.
Soot zero.
No oil was added between changes.
Because of fuel dilution I’m continuing with xW40 grade going forward.

Additives
Sodium 5, new oil 2
Boron 24 new oil 128
Ca 870 new 864
Magnesium 336 new 395
Zn 689 new 833
Phosphorus 735 new 873

New oil values are from their data base.
Other than locomotives this is engine #4.
04 C240 MB, 2006 LBZ duramax, 2013 1500 5.3L and 2011 LML Duramax.
Results were in my email in 18 hours from the time I put the sample in the after hours bin.
www.btarcm.com
 
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They did partial counts: 4u 33,530, 6u 3,613 21u 4. 22/10/12 total, but we don’t know how clean the new oil was.
What oil filter was used with that OCI/UOA? The oil filter's efficiency should be reflected in the PC.
 
2023 Toyota Corolla Cross Hybrid. I got a pump on this thing real quick. It’s pretty good but pumped.

Average mpg for this OCI was 46.8. This oil had about 8000 miles on it oil countdown reads 2100 left trying to get it synced with the odometer total miles on vehicle

Out Valvoline restore and protect 0w20 with Fram tough guard filter


In Valvoline restore and protect 0w20 with Toyota Denso Filter. This is the third fill of Valvoline Restore and Protect in this vehicle, will go full 10 k as long as my service is mostly long trips.

Pictures is the oil level before oil change which remained stable throughout the OCI nothing andded.
Also pictured is the last commute trip back from a worksite on Friday afternoon to demonstrate average trip service.

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Me so bad…. PH 12750.
The cheapest and holds the most oil.
I’ve never taken much interest in filters.
What would you suggest?
I've switch to using Carquest Premiums (only available at Advance Auto Parts) or MicroGard Select (only available at O'Reilly's) filters. The new Mobil 1 (center tube with holes, not louvers) at Walmart is pretty good too, but it's 99% @ 30u if efficiency isn't at the top of the requirements list. The Fram PH is about at that same 99% @ 30u efficiency level. If you want more oil filter knowledge, go hang out in the Oil Filter forum ... lots of info there.
 
Average mpg for this OCI was 46.8. This oil had about 8000 miles on it oil countdown reads 2100 left trying to get it synced with the odometer total miles on vehicle
It's nice to see someone brave enough to go past 5k with Valvoline Restore and Protect. Hopefully you will post a used oil analysis after the 10k run.
 
2012 Honda Civic EX - R18Z1 - 5-Speed & 3 pedals. My 17 year old daughter's car. Changed it 1000 miles early so I don't have to do it when the weather sucks. This completes migrating all four of my vehicles to Valvoline Restore and Protect 5W-30.

Out: Kirkland Signature Full Synthetic 0W-20 & ECOGARD X4610 (3839 Miles)
In: Valvoline Restore and Protect 5W-30 & Carquest Premium 84356
 
It's nice to see someone brave enough to go past 5k with Valvoline Restore and Protect. Hopefully you will post a used oil analysis after the 10k run.
I'll be doing about 6k on my wife's CRV. MM is at 20% now and she has about 5500 miles. I figure 6k is a good round number. I think 7500 is where the MM will hit 0%. For the next 3 OCIs, I will probably do the same at 6k.
 
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2008 Malibu 2.4 Ecotec 111200 mi
OCI: 6Mo ~1200mi
Out: Mobil 1 15W50
Out: Fram Xg9018 (2x 6mo OCI)
In: Mobil 1 High Mileage 5w30 from 2021 Walmart pricing errors
In: Cotton media? wire backed ST9018
Only 1200mi, but the oil was actually pretty black, because of all the short trips I change the oil every 6mos regardless now.
 
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