Post your latest oil change

[OldCracker29]

6/20/2026
2011 Silverado 2500HD 6.0L W/T
Amsoil High Mileage 10w30
Wix oil filter
4,872 miles on oil...OLM @ 38%
307,446 total miles on truck.

 

[Black02Silverado]

13 June 2026
Total miles; 64,557
Miles on oil: 5,343
EaO17 filter
Went to ALM SS 5w-20

Been using SS 0w-20 from new, but wanted to change to the 5w-20 because I liked the data on the data sheet, to me it seems like a little better product. But as you can see, not much difference. This is also with running a mix of 10 gallons E85 to a tank topped with 93. It isn't a flex fuel vehicle so any higher I get a CEL for running lean on both banks. Yes my mileage takes a hit. Instead of 20 mpg I normally get on trips I get 17mpg. This is also using EaO17 filter. What is amazing is I have the AMSOIL cone filter on it since I have the GM Performance intake installed and that air filter has 44k miles on it. I just take it out and shop vac it off once a year. I use the upholstery tool on my shop vac. Works well.

 

[Black02Silverado]

Here's our 2016 suburban
10 June 2026
Total miles: 113007
Miles on oil: 5,500
EaO17 filter
This run I figured I would try Valvoline R&P 0w-20
I went back to AMSOIL ALM 5w-20, will see on the next UOA how it goes.

Took this sample after a trip back from the mountains and running E85 100%. I converted it to FF a long time ago. Lucky to have E85 available at Sheetz here in NC. Now Rutter's which is up in PA also has it.

 

[Black02Silverado]

25 July 2026
Total miles: 51,175
Miles on oil: 5,176
Ecoguard filter

Here's the second DEO UOA on my 22 Wrangler with the Ecodiesel. This has 5k miles on AMSOIL Signature Series DEO 5w-40. The first one was dealer installed oil, no clue what it was, the second is what AMSOIL recommended, European FS 5w-40, Most of the Ecodiesel world is showing great results using the European MS 5w-40, I figured I would see how the DEO works. This is using an Ecoguard oil filter. It's my understanding this engine likes to shed aluminum. We will see. So far I don't think this is too bad.