No they are not.
Liqui Moly engine oil reliability
- Thread starter Ashraf Jaafar
- Start date
(They are not ) what !
No, they are not.
I agree with you in prices , but regarding HC oil , as far as I know that HC oil or group III base stock is extremely high refined oil with unique uniform structure that give the engine the almost the same protection and performance as PAO base stoc; and it can be considered synthetic as well , watch this video
yeah i agree that modern hc oils have almost no drawbacks compared to pao oils. Maybe in small extreme cases.
I am no blender but from what i can understand PAO based oils etc.. are also more difficult to blend the additives.
Also a pure PAO oil is in no way beneficial that a good additve blended HC oil.
In germany where liqui moly comes from it is not allowed to sell hc oil with branding fully synthetic on the canister.
OVERKILL
$100 Site Donor 2021
The higher you go from groups I through IV the less solubility the base oil has with respect to additives and the less effective it is as a carrier. So other bases are used to provide that function. Both AN's and POE are often used in PAO-based formulas to improve seal compatibility (PAO has a "drying" effect on seals and will shrink them, so there's a formulation balancing act performed here to prevent that from occurring).
Group III bases also have poor solubility, though it is better than PAO, but they lack the seal harshness problem so are often (not always) blended with Group II for better solubility vs more expensive options like AN's and Esters (POE).
Group III oils are significantly cheaper to blend based on the above, so it's not surprising that they are so popular. Since they can approach PAO-type performance in many respects, they are an obvious choice to increase profit margins and not have to deal with the delicate and expensive balancing act inherent with blending a PAO-based lube.
I don't believe that's accurate (the uniform structure angle). HC oils are simply more severely refined than Group II and Group II+ oils, the act of hydrocracking further reduces the wax content and increases the purity but PAO is actually constructed from, IIRC, ethylene building blocks to produce a completely man-made hydrocarbon, which is why it is completely uniform in structure.
The primary advantages of PAO are:
- Improved oxidation resistance (beneficial for extended drains which is why the AMSOIL SS products are PAO-based)
- Unmatched cold temperature performance (PAO contains no wax so doesn't require dosing with PPD's to achieve its low temperature performance/pass testing)
All that said, a PAO-based lube with the same approvals as an HC product likely provides no discernible benefits unless you are routinely starting your engine when it is -40C or have a particularly demanding application for extended drains or highly prone to oxidation.
Very interesting, thank you
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Thank you OVERKILL for the explanations. Well laid down and informative. Bravo!
SammyChevelleTypeS3
$50 site donor 2023
Thanks for taking some of your time to share that.
I was surprised by that video when the guy stated he places MOBIL1 + AMSOIL together in a higher-level lubrication tier than other products. He is wearing an AMSOIL shirt
. But It makes me think they both have very similar, better quality add packs or the base they start with is much better than others? He must have seen interesting facts to say something he did not have to. Just backs up what I thought about both MOBIL1 and AMSOIL. I have a brother who is a lifelong MOBIL user. He used to get so excited and amazed at his satisfaction level from the use of MOBIL oils that he would occasionally save his "changed/used oil" to show me what he drained out during his latest oc. He did that because I have worked on his older vehicles many times before he started using MOBIL with his very first Honda Accord. A Honda dealership technician told him "Mark, use a MOBILE oil if you want to stay out of service departments! LOL, He has spent very little on auto repairs since that time. The quality of motor oils is maybe catching up to the great advances & reliability of today's modern autos. Good 4 us.
What he is saying is that BMW LL04 and MB229.5 are not found together.
BMW LL04 and MB229.51 are.
There is nothing wrong with it
5W-20 in my 2021 Ram 1500 6 lug w Hemi. My "go to" oil Magnatec had the occasional lifter noise at startup that Ram said was not unusual. It left me unsettled. I replaced it with Liqui Moly Special Tec AA 5w-20. I am very happy with it. The engine is smooth, and quiet.
IMO there are better choices and for less $$.
My Eastern European gearhead friends think this stuff is the best. Convinced of it. As for myself, I don't doubt it's a quality product, but see no reason to pay a premium price for it over the many other great options out there.
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I think it is really interesting that LM formulated a motor oil with their additive. I read just yesterday that their product is inferior to tri-nuclear moly but I wonder if they're old-school Tech with the oil is something to be desired.
Liqui Moly is a quality brand just like about every name brand. If you like it there is no reason not to use it. It's not really that expensive either.
LM differentiate between Full Synthetic and Synthetic technology, they really do test their products and I'd not be afraid to use their synthetic technology, in fact I have used it. Grp III has come a long way and now it rivals Grp IV in performance. Now it may be that in Israel in the summer the Grp IV may have an advantage, but am not so certain.
That is exactly what LM in Germany told me when I enquired years ago.
