Response from Liqui Moly tech referencing Mos2 usage.

[GI_GRIFF]

I kind of like the Liqui Moly Mos2 engine oil additive, it stopped the VVT actuator rattle on my 2015 Honda CRV engine at cold start. That rattle started about 60,000 miles and the correct way to fix it would have been to replace the VVT actuator. I may use the stuff on my new car with the 0w-16, but I thought I would ask Liqui Moly their thoughts on using it on a vehicle under warranty. Yes, I realize you shouldn't use additives, should use 5w-30 no matter what the owner's manual says and all that, and of course, whatever oil is cheapest at Walmart. But anyhow, I thought I would share what the response was back from Stefan at Liqui Moly:
Joel,



MoS2 cannot affect engines in any negative way, it will only reduce friction which will equal better protection. According to the Magnuson-Moss Act (federal legislation) it is illegal for a manufacturer to refuse warranty based on non OEM parts or lubricants used. If they would by chance refuse warranty, they will have to provide proof that whatever product (or part) that was used, caused the damage.

MoS2 Anti Friction will strengthen the protective lubricant layer when used with any engine oil including a modern 0W-16 viscosity oil.





We hope this information proves helpful. If you require any further clarification or have additional questions, please don't hesitate to reach out. Our team is readily available to assist you.



Regards,



Stefan Braun

Application Specialist

 

[demarpaint]

 

[TomYoung]

The Compleat Rant on Additives: I am still basking in the warm feeling of doing a Liqui Moly flush, drain, rinse with cheap oil, drain, fill with a can Ceratec, PUP, and a little smush of Marvel Mystery Oil Synthetic to get the volume correct on an Acura J35. Since you are asking, that went in with a WIX filter. This is on a rather high mileage sled, and is part of my routine every 30,000 or so miles. I think that the Liqui Moly stuff is all engineered, trustworthy, and really beyond reproach. The MMOS might be a little shaky, but it isn't Motor Medic, STP, Bardahl whatever, or Motor Honey, so I can look down with disdain on those products and know I am better than those people. Do I care that LSJr says that the stuff does nothing? Not one whit. And not that there are any moral differences between oil weights, I still run 0W20, like the oil filler cap tells me to.

 

[GI_GRIFF]

The Compleat Rant on Additives: I am still basking in the warm feeling of doing a Liqui Moly flush, drain, rinse with cheap oil, drain, fill with a can Ceratec, PUP, and a little smush of Marvel Mystery Oil Synthetic to get the volume correct on an Acura J35. Since you are asking, that went in with a WIX filter. This is on a rather high mileage sled, and is part of my routine every 30,000 or so miles. I think that the Liqui Moly stuff is all engineered, trustworthy, and really beyond reproach. The MMOS might be a little shaky, but it isn't Motor Medic, STP, Bardahl whatever, or Motor Honey, so I can look down with disdain on those products and know I am better than those people. Do I care that LSJr says that the stuff does nothing? Not one whit. And not that there are any moral differences between oil weights, I still run 0W20, like the oil filler cap tells me to.

That was a FINE rant on additives Mr. Young. And yes, I agree Liqui Moly is a reputable company.

 

[RooflessVW]

“The manufacturer has to prove the additive caused the damage.”

No they don’t. They can deny your warranty on a whim, and then YOU have to take them to court. Then, MAYBE they’ll have to prove their position.

 

[demarpaint]

“The manufacturer has to prove the additive caused the damage.”

No they don’t. They can deny your warranty on a whim, and then YOU have to take them to court. Then, MAYBE they’ll have to prove their position.

Precisely! While you foot the bill for an attorney, or fight the good fight alone while your car sits waiting for the outcome.

 

[GI_GRIFF]

“The manufacturer has to prove the additive caused the damage.”

No they don’t. They can deny your warranty on a whim, and then YOU have to take them to court. Then, MAYBE they’ll have to prove their position.

As far as that goes Roofless, they can deny your warranty if you are using their engine oil they installed, saying you put something in it in between services or something. Basically, the warranty on anything is only as good as the people backing the warranty.

 

[GI_GRIFF]

Precisely! While you foot the bill for an attorney, or fight the good fight alone while your car sits waiting for the outcome.

As far as that goes, they can deny your warranty if you are using their engine oil they installed, saying you put something in it in between services or something. Basically, the warranty on anything is only as good as the people backing the warranty.

 

[The Critic]

Any aftermarket additive company would have given you the same response. You'll have to make your own informed decision.

 

[GI_GRIFF]

Any aftermarket additive company would have given you the same response. You'll have to make your own informed decision.

Yeah, I know that Critic. I just know I have had some good success with that particular Mos2 additive in the past. How often do they say, "For God's sake, NEVER use our additive in your engine, it will seize-up within 30 minutes!!" LOL!

 

[dubber09]

Not to veer off the subj too much, but I used LM MoS2 on my cars a few times and saw no ill effects; then used Ceratec in Forte that developed a bit of a piston slap just to quiet it down and I witnessed an unexpected effect of stopping very minor oil leak in just a few hundred km. HM oils and stop leaks used before did nothing before then. The leak was from rear main seal and was evident with a drop or two of oil on garage floor after parking overnight.

 

[hemioiler]

Is it a fully formulated oil? Because if it isn't, you're just diluting the other additives and good stuff in your real engine oil.

Smarter guys than me can say whether its an issue, but my view is, why not buy a proper, fully formulated oil, instead of playing backyard chemist?

HPL's offerings, for example, already contain far more moly than you'd get by adding this stuff to off the shelf oil. And it's fully formulated, no worry about chemistry clash or dilution.

 

[The Critic]

Yeah, I know that Critic. I just know I have had some good success with that particular Mos2 additive in the past. How often do they say, "For God's sake, NEVER use our additive in your engine, it will seize-up within 30 minutes!!" LOL!

Thread 'Liqui Moly MoS2 interesting sediment pics.'

Sep 26, 2020

I ran a bottle of Liqui Moly MoS2 #2009 along with Supertech synthetic 5w30 and a Napa gold filter in my 2019 Ram 1500 classic hemi for 5300 miles. I accumulated these miles in just shy of 10 weeks. The truck currently has 20660 miles on the ticker.

I know there's plenty of MoS2 threads on here, some with people's experiences with it leaving some type of material or substance behind. I knew this going into it, but you can now count me as one who experienced finding something.

It's a graphite like material left behind on the dirty side of the oil filter. The oil filter on hemi Rams sits...

• JTK
• Replies: 245
• Forum: OTC and Third Party Oil Additives

• 
• 

 

[demarpaint]

As far as that goes, they can deny your warranty if you are using their engine oil they installed, saying you put something in it in between services or something. Basically, the warranty on anything is only as good as the people backing the warranty.

Maybe. They could also have an oil analysis done to rule in/out that "you put something in it in between services" too. If you feel that's no risk and no downside, go for it. Odds are you'll probably be fine, if not you know what could happen.

 

[Trav]

If something negative happened they can always fall back on this from their own description.

Specifically designed for older engine designs with or without a turbocharger.

https://www.liqui-moly.com/en/us/mo...aM4LQ-AUixYKW_x9V#tab-label-description-title

 

[TomYoung]

“The manufacturer has to prove the additive caused the damage.”

No they don’t. They can deny your warranty on a whim, and then YOU have to take them to court. Then, MAYBE they’ll have to prove their position.

Do we have a situation where someone has a credible claim that his or her car was damaged by a Liqui Moly product. If not, is there a situation where someone has experienced damage from a lower tranche product?

 

[GI_GRIFF]

If something negative happened they can always fall back on this from their own description.


https://www.liqui-moly.com/en/us/mo...aM4LQ-AUixYKW_x9V#tab-label-description-title

Yes Trav, they could fall back on that, or just ignore me, as far as that goes, if I have trouble. Actually, they would probably prefer that I'd use their 0w-16 engine oil, or their high dollar Cera-Tec additive. I had good luck with their Mos2 in my 2015 Honda CRV, and it literally did do the "mechanic in a can" thing, eliminating the VVT actuator clatter on cold start. The right way to fix that would have been to replace the VVT actuator. I put a can in at every oil change after that. Traded the car off on this new 2025 Toyota Rav4. I probably don't need it, but the 0w-16 oil makes me nervous, and I am positive the Mos2 will strengthen the lubricant film. Is it enough to matter, who knows, but I know it did matter on my 2015 Honda CRV. It doesn't cost much, $8.00-$10.00 a can.

 

[GI_GRIFF]

Do we have a situation where someone has a credible claim that his or her car was damaged by a Liqui Moly product. If not, is there a situation where someone has experienced damage from a lower tranche product?

What does "lower tranche product" mean Mr. Young? That vocabulary is above my pay grade.

 

[scoot]

I kind of like the Liqui Moly Mos2 engine oil additive, it stopped the VVT actuator rattle on my 2015 Honda CRV engine at cold start. That rattle started about 60,000 miles and the correct way to fix it would have been to replace the VVT actuator. I may use the stuff on my new car with the 0w-16, but I thought I would ask Liqui Moly their thoughts on using it on a vehicle under warranty. Yes, I realize you shouldn't use additives, should use 5w-30 no matter what the owner's manual says and all that, and of course, whatever oil is cheapest at Walmart. But anyhow, I thought I would share what the response was back from Stefan at Liqui Moly:
Joel,



MoS2 cannot affect engines in any negative way, it will only reduce friction which will equal better protection. According to the Magnuson-Moss Act (federal legislation) it is illegal for a manufacturer to refuse warranty based on non OEM parts or lubricants used. If they would by chance refuse warranty, they will have to provide proof that whatever product (or part) that was used, caused the damage.

MoS2 Anti Friction will strengthen the protective lubricant layer when used with any engine oil including a modern 0W-16 viscosity oil.





We hope this information proves helpful. If you require any further clarification or have additional questions, please don't hesitate to reach out. Our team is readily available to assist you.



Regards,



Stefan Braun

Application Specialist

What OCI were you doing on the CRV ? Were you the original owner ?

 

[TomYoung]

What does "lower tranche product" mean Mr. Young? That vocabulary is above my pay grade.

Tranche means "part" or "portion." I actually thought it meant "level," and had to look it up. I am pretty sure I used it correctly, and would say that if the can says "Bardahl" on it, it's a lower tranche product. Liqui Moly is, of course, a premium offering