I’m about to do my 2nd oil change on my 997.1 with LM 0W-40. It has 55k miles and a clean Blackstone report last time. It uses no oil. There are a lot of good comments about the LM MoS2 in this forum. I used it last oil change. The car is not tracked. Should I be using Ceratec this change, MoS2, or both?
thanks

 

You're using LM oil, I'm not sure I follow the logic that you need to buy another LM product to fix the deficiencies in the LM oil that LM sold you already

My take: good oil companies put a lot of work and testing into designing additive packages that work, and there's no real need to try to roll your own. Just buy a good synthetic Porsche A40 oil (I'm of the opinion they're all pretty much the same to any degree that matters in a street car), quality filters, and change it on some sort of reasonable schedule and your engine will last a long time: anything beyond that is marketing.

If you must use additives I'd suggest just picking a single one. This isn't a case where more is better, and multiple additives may react in ways that are not good. Case in point: ZDDP in small amounts is protective against metal-to-metal wear, but if the level gets too high it can actually increase wear.

 

You have exactly the same car as mine, almost same miles. Also I use the same LM 5W-40 oil, and perform my Blackstone OA every change. Las time, following recommendation from Charles Navarro (LM Engineering) and Lake Speed (Tribologist) in one of those Tech Tactics podcast from PCA, recommends Ceratec when is used with LM oils, as it increase molybdenum and friction protection. So, I went ahead, and on the last oil changed (02-2023) I added this additive. So far my 997 is running smooth no oil added, although is too early to say any conclusive results. I guess is a little bit pricey, but as I perform my own oil changes the savings can allow me to trow $50 extra in the mix; just to see how it compares with previous oil analysis.

 

Which LM oil are you using? TN is not that cold in the Winter, is it? Why not 5W40?

Engines with 20k miles or less use Ceratec. In your engine, use MoS2 - 1.5 bottles per oil change.

 

2009 C2S 191K miles

I use LiquiMoly Leighlauf 5W 40 with a bottle of Ceratec and change at 5K intervals. Why? I dunno, it entertains me. The LM here is Porsche A40 and for some reason, contains little to no moly so I add it back with Ceratec (that does contain moly and a ceramic). I also feel 0W is too lite.. The Porsche A40 spec is driven, to some degree, to drive efficiency and emission targets among others.

Whatever...

Peace
Bruce in Philly (now Atlanta)

 

I use the LM 0W-40 Synthoil Energy A40. The previous owner had used it, I just continued on, good or bad.

 

Run 300v- change every six month.

gobs of moly, proven oil, no additives.

 

I suscribe every Bruce word there. Also I “feel” that 5w40 is a little bit better oil for this warmer weather (106F today!).

 

This is part of an email I received from LM :Add Ceratec to the new oil for less internal friction which equals less wear. Ceratec will help the piston rings seal better against the cylinder walls which will also contribute to better performance and less oil consumption. And a very effective way to also improve performance thanks to it reducing internal friction. Only needs to be added every 30,000 miles

There was no mention of MoS2. With the comments received, I will use Ceratec this time with 5W-40 and use MoS2 next time.
thanks

 

This makes no sense to me. You should run a Break in oil with a new engine that's not synthetic because it has a little more friction and helps create the initial ring seal to the cylinder walls. Introduction something that actually reduces friction is exactly the opposite of what you want to do and why you don't run synthetic oils in brand new engines.

 

The only UOA reports on LM oil that look any good to me are the green bottle version, whatever that is - maybe MolyGen?

All the other LM samples I've seen have high iron and copper wear (bearings).

 

LM recommends the Leichtlauf 5W40. The Synthoil is an old oil.

 

Casually, I got this yesterday from a LM stand:


Pamphlet cover

Additives

 

We were at the stand and I asked for different oils in the same brand, and my friend has a 718 Cayman S 2020 so he inquiry to the LM specialist, about the Synthoil type he was favored for use and the answer was that it is the old tech from LM -still a good oil-, but better to use Leichtlauf High Tech either 0W-40 or 5W40, as this was the "new" tech in oils (for water cooled Porsches, (both meet A40 specs).

 

PCA just released a video about their visit the the LM headquarters in Germany:


So MoS2 is for air cooled and Ceratec for water cooled engines? I'm confused. I thought Ceratec was ideal for newer engines. So should we use MoS2 or Ceratec in 997.1 engines? 🤔