M1 FS 0W-40, M1 FS 5W-40, D1 ESP 5W-40 Volatility Results - March 2025

Amazing information, thank you for publishing your test results.

If you're taking suggestions, it would be interesting to see how the Mobil ESP line stacks up against these oils. Cheers!
 
  • Like
Reactions: JAG
If you're taking suggestions, it would be interesting to see how the Mobil ESP line stacks up against these oils. Cheers!
Thank you. Good news is that due to a BITOG member very recently sending M1 5W-30 ESP, I will be testing that next. I have also been testing some HPL oils since late 2024, but I have not been posting the results for several reasons.
 
Thank you. Good news is that due to a BITOG member very recently sending M1 5W-30 ESP, I will be testing that next. I have also been testing some HPL oils since late 2024, but I have not been posting the results for several reasons.
Looking forward to those results. I have some M1 ESP 0W-30 if needed for comparison.
 
Thank you. Good news is that due to a BITOG member very recently sending M1 5W-30 ESP, I will be testing that next. I have also been testing some HPL oils since late 2024, but I have not been posting the results for several reasons.
Great! I've been using 5w-30 ESP in all of my vehicles as of late, so I really look forward to hearing about it. :D
 
  • Like
Reactions: JAG
Here is a picture of the cups after wiping them with rubbing alcohol. I have to sand the varnish off before the next test occurs.

IMG_8509.webp


IMG_8511.webp
 
After ending the test, I poured virgin oil into each cup and they sat until this morning. I stirred the mixtures, then drained the oils. The two M1 oils have a lot of insolubles left behind, while QS Ultimate Durability 10W-30 has almost none. The pictures are not as revealing as my eyes are. M1 0W-40 FS has roughly twice as much insolubles volume as M1 5W-40 FS does. The difference in amount of insolubles between the two M1 oils and QS UD is huge. I did not include a picture of D1 5W-40 ESP because it was not tested as long as the others, but the amount of insolubles is similar to what QS UD’s cup has.

View attachment 277099

I did some tests in old days torching different oil in aluminum cups ... it was for fun and I don't recall the results. I think I posted it here.

Based on your test, 10W-30 did well. I have a feeling M1 EP 10W-30 may win this test.
 
  • Like
Reactions: JAG
Good 10W-30 synthetic oils do tend to have very little VII or even none and the base oils are relatively viscous, which leads to low volatility. M1 10W-30 EP probably has fairly low volatility but I expect it to be considerably higher than QS UD 10W-30. Same is true for almost every oil. That QS oil has crazy low volatility. Sadly it is extinct. QS UD became QS UP, and they don’t make it in 10W-30. QS UP oils do have very low volatility for their viscosity grades. I tested some of them and have a thread about it.
 
Back
Top Bottom