It's amazing TBH...I need this.
Mobil SHC oil - 1st PAO oil
- Thread starter ArthurArgentum
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MolaKule
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I suspect SHC was, "Synthetic HydroCarbon"
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There was an amusing thing, by the way. To be precise, Mobil's rendition - Synthesized HC.
During the period of 1973-78, the term "synthetic" did not enjoy a particularly favorable reputation. Mobil made an unsuccessful attempt to promote the usage of the term "synthesized" instead of "synthetic"
It reflects the intricacies of language and marketing strategies during that specific timeframe.
MolaKule
Staff member
I remember some of those discussions in the Trade papers.
@ArthurArgentum
Thanks for the posts! Very interesting info.
Is the rest of that last article basically talking about the fuel savings using synthetic or thinner synthetic oil?
Can't recall when CAFE started. Curious if that era was the beginning of CAFE or if Mobil 1 was ahead of the game in that regard or if "fuel savings" was one of the side benefits of synthetic oil development and was a comeback or an afterthought in response to Exxon?
"But the extra energy to make Mobil 1 could be saved more than 15 times by its scientifically documented gasoline-"
Thanks for the posts! Very interesting info.
Is the rest of that last article basically talking about the fuel savings using synthetic or thinner synthetic oil?
Can't recall when CAFE started. Curious if that era was the beginning of CAFE or if Mobil 1 was ahead of the game in that regard or if "fuel savings" was one of the side benefits of synthetic oil development and was a comeback or an afterthought in response to Exxon?
"But the extra energy to make Mobil 1 could be saved more than 15 times by its scientifically documented gasoline-"
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full - "But the extra energy used to make Mobil 1 could be saved more than 15 times by its scientifically documented gasoline-saving ability alone."
During the 1970s, a prolonged energy crisis unfolded, which began in 1969 and reached its apex in 1973. It was during this time, specifically in 1975, that CAFE emerged alongside M1. The push for fuel economy from M1 synthetic oils was attempted to be justified by various factors. Mobil included improved performance during cold starts and cold-flow properties, as well as other real & quasi proofs for efficiency.
actually GTL outperforms pao in many categories according to Gokhan
yeah, sure
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I don’t see how this is true. They end up basically the same.
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If we compare two pure base oils with approximately similar viscosities, namely PAO and GTL (FT), the molecules at their main part will have roughly the same carbon content, let's say C30 (C30H62). These core molecules (75%-95%) are exemplified in PAO4 and GTL4. However, GTL4, produced with a higher CO2 concentration, exhibits superior characteristics according to the D2879 method, which assesses thermal cracking of molecules (The differences will be notably more pronounced between GTL8 and PAO8, with GTL8 expected to exhibit superior performance, the carbon numbers of core-molecules for PAO8 and GTL8 are higher, ranging from C40 to C50+).
The slight disadvantage PAO may occur in this regard could be attributed to its isomerism. The isomerism of PAO molecules differs from that of GTL molecules. PAO derived from decene tends to form clusters along the C10 chain and is susceptible to detachment at certain attachment points. Consequently, the likelihood of cutting or cracking the C10 branch is higher in PAO compared to the more intricate twisted GTL molecules.
However, it is important to note that this is not always the case, as PAO produced through new methods (such as the new PAO 3.5 Max from XOM) may even surpass GTL or demonstrate superior performance.
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OVERKILL
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GTL doesn't have the seal shrink issue and has slightly better solubility, and may, depending on what PAO you are comparing it to, have lower Noack. But, PAO still beats it on cold temperature performance, being wax-free, while GTL has less wax than your typical Group III, but still has some, so requires PPD's. PAO may also offer superior oxidation resistance.
GTL is less expensive to produce, which is why it is becoming so common now.
One of the main issues is that the slate of GTL base oils is relatively narrow. The Qatar GTL slate (QHVI) was originally (not sure if they've broadened it since), 3, 4 and 8cSt. Mobil has 2, 3, 4, 5, 6, 8, 10, 40, 65, 100 and 150 in the SpectraSyn PAO family in comparison.
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In China, there has already been a notable emergence of grade 10, which is quite uncommon for this particular type of base oils (III, III+).
Base Oils - Dowpol Chemical International Corp.
ICCSYN® CTL base oils are API Group III Plus based on CTL (Coal To Liquid) technology. Their unique synthetic composition, with no aromatics, naphthenic, sulfur and nitrogenous content, is designed to enhance performance over conventional base oils in many extreme applications. The basic...
Gokhan have interesting post about GTL and Pao.
OVERKILL
$100 Site Donor 2021
Yes, though some of that is opinion.
Still is and it's 0w20 ugly sibling lol
When it came out in the 70’s, I put it in my new slant 6 Plymouth Duster. Engine started using it like crazy. No leaks so I figured it was blowing by the rings or valve stems. Switched back to regular oil.
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