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My buddy carries that Delvac 1 to the Ford dealership - been doing it for so long that they quit complaining - and he buys a Super Duty per year on average …
LSJr tests and discusses DexosD babymax oils
- Thread starter johnmyster
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Apologies if you’ve answered this before, but why the euro vs the HDEO?
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- Joined
- Nov 21, 2024
- Messages
- 129
The euro AFL is dexos 2, ACEA C3, BMW LL04, and MB229.51 rated. I wanted to try it because I liked the what the PDS said for it's low noack, good viscosity index, and it's 4.1 HTHS. I figured why not for going up to a 40 grade.
Well, thank you for confirming again the exceptional shear stability of the ESP line along with the other things...
However,
There is something wrong with Delvac 1 ESP 5w-40 addpack and ht/hs .
SA would be ~0.8% with the above numbers,instead of ~1% .
https://www.mobil.com/en/lubricants...-lubricants/products/mobil-delvac-1-esp-5w-40
Also the measly PVL@100C (0.75%) does not translate at all to its declared post-shear ht/hs of 3.5cP .
Some sloppy work here with data :
However,
There is something wrong with Delvac 1 ESP 5w-40 addpack and ht/hs .
SA would be ~0.8% with the above numbers,instead of ~1% .
Here it is and yes it is CK-4 rated.
Also the measly PVL@100C (0.75%) does not translate at all to its declared post-shear ht/hs of 3.5cP .
Some sloppy work here with data :
His additive analysis is always wildly off from what we see from other labs. I had esp x2 analyzed by wearcheck and the values i got are what was expected. His are off across the board.Well, thank you for confirming again the exceptional shear stability of the ESP line along with the other things...
View attachment 343984
However,
There is something wrong with Delvac 1 ESP 5w-40 addpack and ht/hs .
SA would be ~0.8% with the above numbers,instead of ~1% .
https://www.mobil.com/en/lubricants...-lubricants/products/mobil-delvac-1-esp-5w-40Here it is and yes it is CK-4 rated.
Also the measly PVL@100C (0.75%) does not translate at all to its declared post-shear ht/hs of 3.5cP .
View attachment 343985
Some sloppy work here with data :
View attachment 343986
Not sure why he thinks delvac 1 ESP is PAO/ester. Its GTL/ester/AN
“There are no bench tests that have exact correlation to the real world. That’s why engine tests are required. We ran the 33C version, which is part of the GF-7 spec, so the OEM’s must have confidence in the test as they have used it for several iterations of the GF standards and have continued to make the passing spec harder to hit.
I’m not surprised by results we saw here because some esters do increase deposits in this test. Moly has the same effect.”
I’m not surprised by results we saw here because some esters do increase deposits in this test. Moly has the same effect.”
He shows data that says the babymax has lower wear metals as miles increase.
I wonder if that simple fact invalidates all his wear metal conclusions. The engine was “breaking in” on the test stand. Oils tested later in the test have lower wear metals.
Correlation but not causation.
I wonder if that simple fact invalidates all his wear metal conclusions. The engine was “breaking in” on the test stand. Oils tested later in the test have lower wear metals.
Correlation but not causation.
I wish he would start with the 5w-40 and work down to the ACdelco 0w-20. If the wear trend was the same you would know its breaking in rather than the viscosity
There are no controls on these tests they and would be utterly useless to give a statistically significant result.
Just no.
The guy is just clueless, again.
Yes but many times, the Acdelco oil is the factory fill, most likely.
Been running the 0w20 ESP X2 in our VW since new. Very good oil, stinks to high heavens when draining it, not sure if that’s the ester or what, but it’s very pungent oil when drained at 5K miles.
It would've been as easy as repeating the delco oil at the end to re-establish the baseline. If wear metals repeated, boom, you've established causation.
But he's a certified lubrication expert and has a youtube channel. After all, he said Delvac ESP 5w-40 CK-4 was PAO/ester.
From the horse's mouth:
Good point, glad one of us is thinkin
Looking like all good reasons to keep not using 20wt oil.
To me all of those wear metal numbers look statistically indistinguishable from one another, I sure wouldn't use them to make the claim for or against a specific oil.
That said, since the three ESP weights are using the same additive strategy you can logically conclude that the -40 must provide better wear protection on account of the higher HTHS.
He has a beef with logic and numbers.
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