Catch can not needed on the new LGX?

[The_Driver]

Over on the 6th gen forum, a member named "Dustya" stated that the new LGX has a PCV oil vapor return system that filters 3X better than the LFX. In other words, it doesn't need a catch can to keep the intake clean like the LFX does. Is this true?

[derek1387]

I bet the 6th gen forum would have more info on that....being that its...a 6th gen.

[SinginHawk]

An arbitrary value like "3x better" makes it sound like snake oil, whether it's true or not.

[The_Driver]

Originally Posted by derek1387

I bet the 6th gen forum would have more info on that....being that its...a 6th gen.

Yeah, I figured that, but being that the engine is so new, they probably wouldn't know anyway. Heck, most owners are still unsure whether or not the M6 LGX has AFM or not. The LFX knowledge is more mature and there are a few that know it pretty good and can compare it to the LGX.

On the GM page, I haven't read anything about a factory designed oil vapor catch recovery system for the LGX like the LT1 has. So, I decided to post over here to gain some insight. It would make sense if GM devised a system to reduce oil buildup like the LT1, but I haven't read anything about the LGX having it.

[Elite Engineering]

While every engine for 2014-2016 has much improved internal separation, they are still hitting the wall of also retaining now the damaging combustion byproducts and other contaminants in the crankcase instead of evacuating them like in the past, so oil is getting dirty much quicker and internal wear accelerating. The PCV system performs several functions and only one is pollution control related. The rest are to remove damaging compounds while they are still in suspension before they can settle and mix with the engine oil, so now that they are improving internal separation, wear goes way up, engine life goes down. GM recently cut the warranty period almost in half to limit exposure, and all others are following suite. There is no way to internally retain the oil mist/vapor and not also retain the damaging compounds as well. So the need of a proper system (Elite E2-X or E2 dual valve w/cleanside is a must) is greater now than ever.


The E2-X dual valve converts the PCV system to evacuate at all times VS only at idle, cruise, and deceleration like the stock system, and it also retains emissions requirements.


The internal separation also has shown very little in the way of slowing/reducing the coking issue of the intake valves. Here is an example of GM's very latest and most effective internal separation, and all 2016 V8's are identical. You can pause this video in the beginning to look close at the level of build-up by just 5500 miles:





Note how the valve stem as it cycles up and down draws these hard abrasive deposits into the guide wearing them as well prematurely.


Until the automaker start implementing the self emptying version of the external separator, this wont go away and must be addressed by the vehicle owner themselves if they want to avoid these issues.


Install the proper Elite system when new, and perform a solvent based upper induction cleaner (Amsoil Power Foam, Seafoam, etc.) every 10-15k miles will keep them clean and the engine alive and well for the vehicles life.


As always, we at Elite Engineering stay at the forefront of the needs of engines as technology changes, we are there with the latest and absolute best solutions on the market period. And if anyone doubts how ineffective most catchcans are in comparison, simply install a E2-X system inline behind any can you have and see it will trap as much or more that gets past any others after they have done their best, then reverse it and see almost nothing gets past the E2-X.


Do it once, and do it right, Elite Engineering USA.

[alice]

EXCELLENT VIDEO!! Absolutely spot on! This is a HUGE issue for DI engines. And he is correct that the ONLY way to solve this issue is to install a catch can, period. I use the Elite E2-X catch cans on all projects. When you witness what comes out of the drain of these catch cans after only 1000 miles, you quickly realize how you DON'T want this crap going back into the engine to coat the valves and contaminating the crankcase oil! Nasty, nasty stuff. My valves on my Twin Turbo LLT stay clean and I have the security that the catch can is doing it's job.

As a note, I have experimented with other cans and as far as I am concerned, the Elite is the best on the market. I have cut a number of others apart and it is apparent to me that the engineering design in the Elite is the best and most efficient. Anyone who has a DI engine should install one of these immediately after the vehicle purchase in order to prevent headaches down the road.