Response from Liqui Moly tech referencing Mos2 usage.

[Revving2Redline]

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.

Ceratec or Mos2 stopped your leak; or did you mean Motor Oil Saver? I have heard some people had left oil leaks from mos2 but i wanted to see if you can confirm before i just assume. Thanks

 

[Revving2Redline]

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.

Or.. You could add half a bottle of Redline HP 0w20 to OCI. Enough ester and higher hths to give you all the same. I don't know what the oil capacity is for your application because I don't have the time to look it up but even if you took an empty bottle of mos2 and filled it up with the 10 oz that it holds and use that every time, you would get more value for your dollar and I think with the quality material that red line uses you would find out that your oil stays cleaner longer and the polarity part of it would do what you're wanting the molybdenum to do and you wouldn't have to worry if something would happen about them discovering the Liquimoly

 

[dubber09]

Ceratec stopped the leak, I was very surprised.

 

[GI_GRIFF]

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.

Just so you know, Liqui Moly makes a better product just for that. It is their "Motor Oil Saver" product, part # 2020. Stefan, a Liqui Moly tech guy says to run it on evry car every 20-30 thousand miles, whether you have leaks or not, the seals and gaskets, including the valve seals will last longer than if you never use the product. Anyhow, their 2020 product is their best to try to seal up an existing leak.

 

[GI_GRIFF]

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

3500 miles or 6 months. I bought it brand new. Loved it. The VVT actuator noise started around 60,000 miles on cold starts. The can of Liqui Moly MoS2 product 2009 eliminated that actuator noise. Did I fix it right, no, that would have cost somewhere between $500.00 to $1000.00. The 2.4 Honda engine of that era was notorious for that issue. It also had fuel dilution issues, I knew this because of oil sampling I had done.

 

[Revving2Redline]

3500 miles or 6 months. I bought it brand new. Loved it. The VVT actuator noise started around 60,000 miles on cold starts. The can of Liqui Moly MoS2 product 2009 eliminated that actuator noise. Did I fix it right, no, that would have cost somewhere between $500.00 to $1000.00. The 2.4 Honda engine of that era was notorious for that issue. It also had fuel dilution issues, I knew this because of oil sampling I had done.

I think Mos2 is well served in BMW engines where they seem to have some concerns. In a daily driver that is well maintained, A boutique is truly the way to go. You could use Mos2 like I do for ultra high mileage especially if you beat on it or do a Chump Car racing as Ceratec takes too long to bond and plate. LM doesn't add their additives to the most majority of their products to maintain Acea labels but they do tout it for better protection. Its widely known most of their items are group 3 and probably in my opinion would benefit. Lots of concerns about settling, daily driving and getting up to temp would resolve, but each has their own experience. If piston rings were stuck, a BG EPR, Gumout Multitune or High Performance 30 Engine Cleaner would be my first step. Follow up with pea fuel cleaner, throttle body cleaning, pcv cleaning and then HPL,Amsoil SS, M1EPHM or VRP. If your still needing to run Mos2 in a GDi, budget friendly synthetic 5w30 or greater and Mos2 and drive it on the highway to plate and hopefully loosen rings as moly is pretty slick.