How long did you go with the factory oil before putting in the Amsoil?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.
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~6500kmHow long did you go with the factory oil before putting in the Amsoil?
So your analysis was the factory oil, right? Not Amsoil?~6500km
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.So your analysis was the factory oil, right? Not Amsoil?
Not a good sign to me ⋯Similar results. Highest fuel yet at 3.5%.
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.Not a good sign to me ⋯
It doesn’t look good to me. Honestly using different brand of oil shouldn’t affect anything of coolant content in your oil. But we’ll see.The most recent UoA from my 2018 CX-9 is attached. The sample was taken at 58500 km.
Potassium levels reported high again.
It doesn’t look good to me. Honestly using different brand of oil shouldn’t affect anything of coolant content in your oil. But we’ll see.
Yeah the Costco’s Kirkland GF-6 oil is indeed cheap. I’m temping to try it which would against my habit of using name brand oil.No, I wouldn't expect it to. I wasn't even considering that when I changed to a different brand, I just wanted to save a few bucks, lol. But it does help to eliminate a possible variable when trying to determine the cause.
Yeah the Costco’s Kirkland GF-6 oil is indeed cheap. I’m temping to try it which would against my habit of using name brand oil.
May be you should try BlackStone next time for UOA?
Sm1ke, why are you saying potassium is higher this time ? I am reading this a 122UC for the previous test and 83UC for this test. Am i interpreting the report wrong?
I thought 83 UC on Potassium level from the latest UOA has less miles on oil life (5,500km / 3,418 miles). The oil on previous UOA has more miles (?km) on oil life, hence higher Potassium level at 122 UC.Well, that's embarrassing
Yup, turns out I was reading it wrong. Potassium isn't actually higher, haha. Oops!
I thought 83 UC on Potassium level from the latest UOA has less miles on oil life (5,500km / 3,418 miles). The oil on previous UOA has more miles (?km) on oil life, hence higher Potassium level at 122 UC.
Sounds like it, which may indicate that if it is a leak, it would be constant, not better and not worse.