SkyActiv Oil Analysis Thread

andrewnds

2021 CX-5 Signature, 2012 Mazdaspeed3 Tech Pkg.
2021 CX-5 Signature (Turbo obviously). This was from my 1st oil change I did. Amsoil XL 5W-30 oil. Love how Amsoil performs with Mazda's turbocharged engines. My Mazdaspeed3 also runs Amsoil and it's been flawless.

Screenshot_20210728-163258_Acrobat for Samsung.jpg
 

andrewnds

2021 CX-5 Signature, 2012 Mazdaspeed3 Tech Pkg.
So your analysis was the factory oil, right? Not Amsoil?
No, I analyzed Amsoil XL 5W-30. I just drained and disposed of the factory fill and didn't sent it off. Being factory fill it's probably not going to test well, it will have extra metals and silcon from engine break in/assembly in it, besides I don't know what oil is factory fill (my guess was Japanese Idemitsu 5W-30, which isn't widely available in NA). My plan is to stick to XL for the life of my CX-5, or for however long I own it for, so I wanted to get a baseline for that oil. Hope that helps explain my method for anyone wondering.
 
:
Southwest Ohio
:
'19 CX-5 diesel
Latest 2019 North American 2.2 diesel UOA. Doing service myself now so decided to try a few 5k mile intervals. Similar results. Highest fuel yet at 3.5%. Now using FORScan app so I'll be able to record exactly how many miles since last regen when I pull a sample to see how that correlates to fuel percentage.

35k mile UOA C5D_35k mile UOA.jpg
 
:
Southwest Ohio
:
'19 CX-5 diesel
Not a good sign to me ⋯
With the variable of the regen cycle I'll need to record the relationship between regen and oil sample collection. The fuel dilution is all over the board from a trace to this 3.5%. With no other known problems or indicators, the fuel alone doesn't bother me too much yet. Something to keep an eye on though.

Mazda has both a visual mark on the dipstick (an "X" ) as well as an oil level sensor and ecu programming for oil dilution. I have always checked the dipstick regularly for any sign of oil level rising and it has so far been solid steady. I remember seeing a PID on FORScan for the oil dilution from the PCM. I'mma see if I can put that in my list of things recorded.
 
:
CX5 GT
If you are willing to experiment, dont live in the polar north and can spare few more $$ for oil
Check out Motul 8100 5w30 for diesel engines.
I have had good results in Europe on many diesel cars with dpfs.