DEAL J&L Oil Separator / Catch Cans for the Jeep Wrangler 392 are In-Stock!

[Grandmas392]

Here is a curious question that I have always had... Why doesn't any automotive manufacturer provide this from the factory? If these are so lifesaving to a motor (Forced induction or not) why wouldn't the engineering teams be all over this?

 

[Bobo57]

Here is a curious question that I have always had... Why doesn't any automotive manufacturer provide this from the factory? If these are so lifesaving to a motor (Forced induction or not) why wouldn't the engineering teams be all over this?

Great question, I assume that Jeep monitors these forums to some extent. Maybe the FCA rep can weigh in.

 

[Fast-n-Furious]

Personally I'm not sold on the oil catch can, thus why I don't want to install one. A bunch of forum members have had that installed, products from different companies. I monitor the oil level of mine on a regular basis and have not observed any loss across two oil changes so far.
I'd guess the oil catch can is not installed from factory may because the auto manufacturers don't expect the average consumers to even care about that during their ownership of a few years?

I've heard some engine already has an air oil separator in the PCV system that returns oil back to the sump.

 

[Grandmas392]

Personally I'm not sold on the oil catch can, thus why I don't want to install one. A bunch of forum members have had that installed, products from different companies. I monitor the oil level of mine on a regular basis and have not observed any loss across two oil changes so far.
I'd guess the oil catch can is not installed from factory may because the auto manufacturers don't expect the average consumers to even care about that during their ownership of a few years?

I'm with you as far as preference. Owned many vehicles, forced and NA, and yet to have one installed. Each time I go on a part shopping adventure this always comes up. Seems to be a 50/50 love or skip topic. Since no auto manufacturer is buying in on installing from the factory, I have always questioned the true savings/help they actually add. I get that there is a visibility feeling, placebo effect, oil is in it after 6000 miles, but like @JC states. It is snake oil. A neat trick!

 

[Fast-n-Furious]

I'm with you as far as preference. Owned many vehicles, forced and NA, and yet to have one installed. Each time I go on a part shopping adventure this always comes up. Seems to be a 50/50 love or skip topic. Since no auto manufacturer is buying in on installing from the factory, I have always questioned the true savings/help they actually add. I get that there is a visibility feeling, placebo effect, oil is in it after 6000 miles, but like @JC states. It is snake oil. A neat trick!

I do my oil change every 6 months, and maybe I only drive less than 5k miles within each 6 months. I consider the new oil from each change will benefit the engine sufficiently.

 

[Johnny@JustBoltOns]

Is this note referring to where the can and the lines are Placed?

Yup once you order they send you a detail link showing where to install it.

 

[Johnny@JustBoltOns]

I'm with you as far as preference. Owned many vehicles, forced and NA, and yet to have one installed. Each time I go on a part shopping adventure this always comes up. Seems to be a 50/50 love or skip topic. Since no auto manufacturer is buying in on installing from the factory, I have always questioned the true savings/help they actually add. I get that there is a visibility feeling, placebo effect, oil is in it after 6000 miles, but like @JC states. It is snake oil. A neat trick!

A car manufacture’s priority is not to make their customers cars last longer by adding a catch can. They want people to trade and buy a new one every few years. Imo

 

[7.62x392]

Another point on why not put in by the manufacturer is that I don’t think they want to put in a part that the customer has to monitor and manually empty every so often. It adds an extra maintenance step, and if not emptied it could spill its contents back into the engine causing hydro lock (there are examples of this all over the internet). I put one on my 392 because it’s so cheap and easy to install, if it extends the life of the engine great, if not then whatever it was only $125 and about 5 minutes of install time.

 

[c4ifford]

dumb question, what problem is this catch can supposed to address really ?

 

[guruman]

dumb question, what problem is this catch can supposed to address really ?

Any combustion gasses that get past the piston rings, ends up in the crankcase. This would build up pressure and cause gaskets and seals to fail, so they vent the crankcase gasses. Because the crankcase is full of oil and rotating assemblies, some oil gets aerosolized and exits the crankcase with the excess gasses. this is increased with forced induction.

To deal with this most OEM engineers just connect the crankcase vent to the intake, so that any gasses get passed back through and the aerosolized oils get burned up.

But.... it can cause unsightly oil to collect in the intake tract. A catch can just collects the oil (and some water) droplets, keeping some, not all, from entering the intake.

Edit:

The upside is that you stop some of that oil from getting back into the engine causing a mess, and potentially collect along the intake valves... maybe .

The down side is that the oil would provide some upper cylinder lubrication, and you have to buy the catch can, and you have to empty it routinely, and it adds hoses and the can to your already tight engine space .

 

[@JC]

dumb question, what problem is this catch can supposed to address really ?

It give the owner a warm toasty feeling inside, kinda like a guarantee on a box...

 

[Johnny@JustBoltOns]

Any combustion gasses that get past the piston rings, ends up in the crankcase. This would build up pressure and cause gaskets and seals to fail, so they vent the crankcase gasses. Because the crankcase is full of oil and rotating assemblies, some oil gets aerosolized and exits the crankcase with the excess gasses. this is increased with forced induction.

To deal with this most OEM engineers just connect the crankcase vent to the intake, so that any gasses get passed back through and the aerosolized oils get burned up.

But.... it can cause unsightly oil to collect in the intake tract. A catch can just collects the oil (and some water) droplets, keeping some, not all, from entering the intake.

Edit:

The upside is that you stop some of that oil from getting back into the engine causing a mess, and potentially collect along the intake valves... maybe .

The down side is that the oil would provide some upper cylinder lubrication, and you have to buy the catch can, and you have to empty it routinely, and it adds hoses and the can to your already tight engine space .

Here is a curious question that I have always had... Why doesn't any automotive manufacturer provide this from the factory? If these are so lifesaving to a motor (Forced induction or not) why wouldn't the engineering teams be all over this?

Unfortunately I don't think any manufacturer is concerned about enhancing the longevity of our vehicles. I wouldn't doubt some engineers who are car guys like us are but the paper pushers are probably only focus on how quickly they can get that customer back in to buy another vehicle or for service to make the necessary repairs. IMO. I wish they would offer this from factory.

 

[GrizzlyBark]

Hey, sorry for bringing back this thread. Anyone have issues with the hose rubbing off the bronze paint from engine cover? (Pic attached).

Any recommendation on what to do? Perhaps some gold insulation tape? It's just a minor cosmetic nuisance but would like to keep things tidy.

 

[Viking Jeeper]

The gold coming off the covers is common even without anything touching it.

 

[GrizzlyBark]

The gold coming off the covers is common even without anything touching it.

Did you just leave it or scraped it all off?

 

[Viking Jeeper]

Did you just leave it or scraped it all off?

Mine is coming off but I have not done much with it. I have seen pics of others that are much worse. I've even heard some people got it covered under warranty.

 

[byhumba]

Mine is coming off but I have not done much with it. I have seen pics of others that are much worse. I've even heard some people got it covered under warranty.

I got it covered under warranty after about six months of ownership. It happened again, so I left it alone. I think it is water dripping on that hot cover when it rains or when water fording.

 

[GrizzlyBark]

Sadly I do not see how dealer would replace mine under warranty when the catch can hose is clearly rubbing against it.

I think I’ll put some tape over it and see how it goes.

 

[byhumba]

Sadly I do not see how dealer would replace mine under warranty when the catch can hose is clearly rubbing against it.

I think I’ll put some tape over it and see how it goes.

Ah. I see. Mine had the paint peel off with nothing rubbing against it.

 

[Johnny@JustBoltOns]

Agh sorry to see this. We ran it just on the inside of he line as we had heard about that fading even on it's own without anything rubbing on it.