Question: Oil Change additive question ?

[killain]

Have anyone out there used this "Liqui Moly Mos2 Anti-friction treatment ? The guys at the Porsche forums and bobtheoilguy.com think the stuff is gold ? It's made in Germany and is pretty dark color but has a lot of positive user feedback ? :eyerole

 

[Vettehead Mikey]

I'm sure this is yet another wonder fluid that does a great job of fixing things that aren't broken.

Don't listen to the Porsche guys- they're the ones with the gold bling around their necks. That's the only way they can get women to look at them.

 

[Hib Halverson]

If your engine is in good condition and you are using an oil that meets or exceeds the Service Manual requirements and you're changing it periodically, you don't need a molybdenum-based additive.

I'll add that if the stuff is so good, Porsche would recommend its owners use it.

 

[Vettehead Mikey]

I'll add that if the stuff is so good, Porsche would recommend its owners use it.

And the refiners would blend it into the oils prior to bottling- just think of the marketing advantage!

 

[LongBeachC4]

The only stuff I have ever used that worked or looked like it did was Z-Max. It some how soaks into the metal under heat. I know it worked because to oil level didn't change. I did see a bit more mileage increase too.

 

[Huskerman]

Hmmm.......I'm thinking it's snake oil.........

 

[LongBeachC4]

Maybe, but it had to go somewhere or the oil level would have been higher. I checked it 15 min after I drove it.

 

[Vettehead Mikey]

Maybe, but it had to go somewhere or the oil level would have been higher. I checked it 15 min after I drove it.

It probably evaporated just like the money in your wallet.

 

[killain]

Adding the un-needed ?

If your engine is in good condition and you are using an oil that meets or exceeds the Service Manual requirements and you're changing it periodically, you don't need a molybdenum-based additive.

I'll add that if the stuff is so good, Porsche would recommend its owners use it.

Well I can't argue with common sense. Sometimes you see this kind of product and you wonder if it isn't something new and different. Not saying "New & Different" is in anyway "Better or Best" I feel that GM decided on Mobil-1 5W/30 I shouldn't second guess them, although I fond of Royal Purple. But these kind of products like "Z-Max" are just something that's sold but really don't provide anything the Mobil-1 5W/30 doesn't. Unless your part of the Automotive community you are very ignorant to these kind or products. I've read that Porsche uses only Mobil-1 as their factory fill Motor oil.

 

[tankman]

Hmmm.......I'm thinking it's snake oil.........

HHmmmm . .. . silly man, snakes don't have oil ! ! ! !

 

[Vettehead Mikey]

Unless your part of the Automotive community you are very ignorant to these kind or products.

And that's the market segment the snake oil peddlers go after. They are aware that the 'insiders' know better but that there's a certain percentage of average consumers will fall for the outrageous promises. Here's a pic I snapped locally just a last week:

Never mind that the first three benefits they tout can be achieved with regular air, read the last line 'A smaller carbon foot print helping the environment'. Whaaaaa? :eyerole

 

[timfitz63]

And that's the market segment the snake oil peddlers go after. They are aware that the 'insiders' know better but that there's a certain percentage of average consumers will fall for the outrageous promises. Here's a pic I snapped locally just a last week:

Never mind that the first three benefits they tout can be achieved with regular air, read the last line 'A smaller carbon foot print helping the environment'. Whaaaaa? :eyerole

And ignoring the fact that air is already 78% nitrogen... I guess it's true what they say: the last 10% (or in this case, 22%) is 90% of the cost... :eyerole

 

[Huskerman]

HHmmmm . .. . silly man, snakes don't have oil ! ! ! !

Tar Snakes does..........

 

[killain]

Lubro Moly Mos2 Anti friction Engine treatment ???????

If your engine is in good condition and you are using an oil that meets or exceeds the Service Manual requirements and you're changing it periodically, you don't need a molybdenum-based additive.

I'll add that if the stuff is so good, Porsche would recommend its owners use it.

Hay Hib, What exactly is molybdenum-based additive ?
And what does it do that say any 5w/30 premium motor oil would benefit from this additive? I know you wrote a great article on Motor oil, But I don't know how to access it right now. I thought you could just, plain words tell us what this is and what it actually does ? Thank you !

 

[Hib Halverson]

Hay Hib, What exactly is molybdenum-based additive ?
And what does it do that say any 5w/30 premium motor oil would benefit from this additive? I know you wrote a great article on Motor oil, But I don't know how to access it right now. I thought you could just, plain words tell us what this is and what it actually does ? Thank you !

A molybdenum-based additive has molybdenum-disulfide, an antifriction substance, as it's active ingrediant. "Moly" is appropriate for and often a component in engine assembly lube and in some flat tappet camshaft break in lubes. The old GM "Engine Oil Supplement" is an example of a product some serious moly in it.

No engine oil used in a Corvette needs an unusually high moly content. In some cases, excessive use of moly engine oil additives causes deposits to form on piston tops and skirts.

The article about engine oil is here on the CAC at:
Corvette Action Center | Tech Center | Engine Oil Deep Dive - CAC's Comprehensive Look at Engine Oil and Flat-Tappet Camshaft Durability

 

[Vettehead Mikey]

Hib is right. I started my career in the engine assembly and test area. We used a spray-on MoS2 product to coat plain bearing surfaces prior to first run. It stayed in place just long enough to allow full oil pressure to develop in the galleries and then washed off to collect in the filters (yecch).

Some automotive equivalent products have particles that are fine enough to not get caught in filters and remain suspended in the oil as it circulates. There again- if it's suspended and not embedded as per Zmax myth- it's not really doing anything is it?

 

[dougelam]

First off most modern engines are made with full roller lifter/rockers which eliminates the need for an extreme pressure type additive ie;molybdenum-disulfide. Second there have been a bazillion engines on the road in the last 30 years and the only problems were due to lack of proper service and not related to the engine oil used. Now we use a high performance synthetic oil and talk about using additives? That's like taking a drink from the holy chalice and asking for some MIO to add to it.

 

[Hib Halverson]

First off most modern engines are made with full roller lifter/rockers which eliminates the need for an extreme pressure type additive ie;molybdenum-disulfide. Second there have been a bazillion engines on the road in the last 30 years and the only problems were due to lack of proper service and not related to the engine oil used. Now we use a high performance synthetic oil and talk about using additives? That's like taking a drink from the holy chalice and asking for some MIO to add to it.

None of the Gen 3/4/5 V8s in Corvettes use "full" roller rockers. Only the trunnion is rolerized. The tips are not. In fact, the only time an production GM engine has used full roller rockers was in 1996 and even then it was only the Lt4.

Also, going to full or partial roller rockers DOES NOT eliminate the need for EP additives.

But...don't confuse that with my earlier statement that moly-based oil suppliments are in unnesessary with today's engine oils. They are still needed just not near to the extent that a moly additive will go.

Lastly, the statement about "...a bazillion engines on the road in the last 30 years and the only problems were due to lack of proper service..." is inaccurate.

 

[killain]

Oil Additives ?

A molybdenum-based additive has molybdenum-disulfide, an antifriction substance, as it's active ingrediant. "Moly" is appropriate for and often a component in engine assembly lube and in some flat tappet camshaft break in lubes. The old GM "Engine Oil Supplement" is an example of a product some serious moly in it.

No engine oil used in a Corvette needs an unusually high moly content. In some cases, excessive use of moly engine oil additives causes deposits to form on piston tops and skirts.

The article about engine oil is here on the CAC at:
Corvette Action Center | Tech Center | Engine Oil Deep Dive - CAC's Comprehensive Look at Engine Oil and Flat-Tappet Camshaft Durability

OK, Thank you Hib !

 

[Hib Halverson]

You're welcome, "killain" glad to be of service.