Amazon Basic 0W40Yeah this is the SN version. The first sample looks better. What oil was that?
This is the older SN version (high calcium).Fuel dilution seems consistent so far with the miles but just note that it doesn't always track w/increasing miles at the same rate. I thought Mobil 1 oxidation readings were <10 now on all these oils but your results show 31. Maybe there's some exceptions on their products. Do you know when you purchased this Mobil? Results look good for the early mileage.
This dude says it's because it's a PAO ester blend - his sample measure at 35.Fuel dilution seems consistent so far with the miles but just note that it doesn't always track w/increasing miles at the same rate. I thought Mobil 1 oxidation readings were <10 now on all these oils but your results show 31. Maybe there's some exceptions on their products. Do you know when you purchased this Mobil? Results look good for the early mileage.
This dude says it's because it's a PAO ester blend.
M1 SN is thin and has esters. Therefore, higher oxidation. Iron might be leaching compared to Amazon bcs. esters.Amazon Basic 0W40
I bought this oil some time last year if not two years ago.That version was. The latest SP version is not. It is speculated Mobil is using ANs in the Triple Action which won't show an oxidation spike.
That was from 15K-20K miles on the car. I find Oil Analyzers system tedious to fill out.That first sample of the Amazon Basic shows it was put in at 0 miles. That can't be right. That UOA does not look like an engine with 0 miles. No break-in metals or silicon. What was actual vehicle mileage during the Amazon oil run?
Thanks for the reminder.This is the older SN version (high calcium).
It's one more data point? It's sparked 19 comments of discussion including someone not knowing Amazon basic made a 0W40? I didn't realize that M1 0W40 has moved away from PAO esters with their new formula? There is some fuel dilution going on as well as lube going out of viscosity? Reassurance? To correct you since this is not a GDI engine and it has PFI?You don't have questions or concerns. You show no desire to move into something else.
Why does this thread exist, other than two UOAs on two SN 0w40s?
I would dump SN. HyunKia 4 cyl GDI / TGDI engines won't load-up on carbon so fast, using SP Standards Oils.
0w40 5w40 and 10w40 SPs are available, since you appear to like the thicker oils. One that you might really like is a frankenblend of 10w30 and 0w40. I used Mobil-1 Euro and Mobil-1 EP Triple Action 50/50 blend there. The longest lasting engines from Korea are the ones that kept relatively clean. Short OCIs are the best medicine for them, plus keeping the oil volume full.
I scratch my head for having so much interest in HPL and Amsoil lately. Do I really need all those nice ingredients. Most members here would also hesitate to abandon the frankenblend I just used, witnessing the visual and hearing results I've had. Yes, one can simply look into that used oil bucket and decipher if the oil is worn out, or not. Or perhaps it's me, changing oils since 1970. No usage - super smooth & quiet Hyundai engine with the Blend and now I'm venturing into something else...... really makes no sense. But I trust Amsoil and HPL to do even better. I'd be shocked if they didn't.
It would have helped and I could have gotten more specific, had the OP mentioned what engine he's dealing with. There's a difference in how to address one versus the others. I'm not sure if he's got a NU, TGDI or Smartstream.