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- May 24, 2025
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"all [M1 samples] break down one [viscosity] grade due to HTHS after having been
Only took a couple reads for me to figure this out, but I'm an
Three 0w-16 choices I am considering next.
- Thread starter GI_GRIFF
- Start date
Only took a couple reads for me to figure this out, but I'm an
Yes, I realize my wording could have been "more better".
- Joined
- May 24, 2025
- Messages
- 26
No, because I literally just said above that I'm a noob.
You haven't watched the video. These tests were performed in HPL's lab on several viscosities of Mobil1 along with Castrol Edge and other bespoke blends HPL formulated for this viscosity test. Do you trust HPL testing was up to industry standards?
OVERKILL
$100 Site Donor 2021
So, now that you are enlightened, do you appreciate how the statement makes no sense?
OVERKILL
$100 Site Donor 2021
Dude, screenshots from the video were posted a few posts up from your first post in this thread, do you think we haven't been discussing this video on here before your arrival?
Again, you using a defined ASTM property as a descriptor for something a lubricant experienced (shear) results in a nonsense statement, which is why I invited you to revise it.
Not to single you out, but Lake's videos have had the unfortunate side effect of this forum experiencing an influx of people with an extremely tenuous grasp of tribology and tribological terminology opining with confidence on things they really don't understand well enough to be able to do so. There's a LOT of nuance he leaves out of his videos to keep them palatable to Joe Average, which Joe Average seems to be wholly unaware of. This is the unfortunate result of how content has to be setup to be successful on the youtube platform, it's not the fault of the presenter or his/her audience. Ergo, it's not your fault that this was your takeaway.
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I did take a look. He’s talking about FS 0w40 and 5w50. Those are not in the ESP line. In fact the pre SP FS 0w40 was tested by HPL and Dave said it was the best OTC oil they’ve tested. ESP uses that original GTL/PAO/Ester formula.
So what SAE characteristic(s) does fuel dilution affect?
It affects both viscosity and the balance of the complex chemistry involved.
Not the answer I was hoping for. If not HTHS as @OVERKILL stated, then what specific SAE spec does fuel dilution alter to go down a grade?
You mention viscosity, but isn’t HTHS (viscosity)? Or not mutually inclusive?
I will let others of more chops answer. OVERKILL is highest level. Most oil experts throw up their arms about fuel dilution. The best solutions involve increased viscosity or more frequent oil changes. Of course a lot of SAE specs are influenced by weakened or altered chemistry.
OVERKILL
$100 Site Donor 2021
Fuel's interaction with the lubricant is complex. It directly reduces kinematic viscosity, as one would expect, but as @DirectRejection noted, can also impact the chemistry, such as degrading the VII polymers that boost KV as well the PPD's that prevent wax formation at low temperatures and may also reduce the effectiveness of various components of the additive package.
Fuel's impact on HTHS is less than its impact on KV, because HTHS is measured under conditions where the influence of the VII polymers on viscosity are already reduced due to shear and at a higher temperature, so your starting point is already considerably lower. You of course get some dilution effect, but the magnitude is considerably less.
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Then perhaps refrain from posting about things you don’t understand.
Because people call out error here rather than just laud YouTube personalities?
And is it only an error when it differs from your understanding of a given subject? Are others not allowed to have an opinion which may differ from yours, and they could be totally wrong? Or is it better you show your "expertise", not by trying to educate, but ridicule?
OVERKILL
$100 Site Donor 2021
Again, not singling you out, but you have to appreciate that this forum has been around for over 20 years, and its focus is, as the name would imply, lubricants and tribology. We have had many Tribologists as regular contributors on here over the years, we still have @MolaKule who posts regularly, the rest don't post as much anymore. As one would expect, with a forum focused on lubricants and tribology, we discuss lubricants and tribology pretty regularly.
Since LSJ has started producing videos, opening up the subject to a broader audience, there has been an influx of new members who seem to not understand the purpose, or history, of this forum, and bring hot takes from his videos like they are Moses coming down the mountain. The word of God from his mouth to their ears, and they are here to enlighten us because apparently, even though this is a lubricants and tribology forum, none of the membership knows a thing about lubricants and tribology
As I said earlier, it's wonderful that Lake has opened people's eyes to this subject and has people engaged on it. I think he's a great resource. The more people with more knowledge the better, but this presumptive nature of folks that join up, that nobody here knows anything, and then they come at us with this bizarre combative attitude, that they are here to teach us all the Real Truth©, well, it gets a bit old. Your first post in this thread, where you implored us all to watch his video was literally 6 posts down from a post that included a screenshot from that video. I'm sure you can appreciate how that came across. When I took issue with the language used in your post, Instead of asking me what part of your post was problematic, you once again instructed me to watch the video, like that was the issue at hand, that I simply wasn't adequately informed, despite it clearly showing below my username that I've been here for 17 years and have over 60,000 posts, which I would hope implies I know at least a little bit about the subjects at hand.
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Unfortunately, it doesn’t show in portrait view on mobile browser. On mobile, it will show when the phone is positioned landscape.
Believe it.
