Good video. The idea about removing crankcase gases is because with each detonation there is filtration thru the piston rings... that means partially fuel gases and other hydrocarbons go thru from the combustion chamber into the crankcase contaminating the engine oil. Contaminating means degrading it, removing it's lubricating and thermal properties... etc. But when oil warm up to operating temperatures, between 85 to 110 Celsius, these contaminants or some of them become gases again... A car that gets used regularly on long runs, like 1 hour freeway, with a working PCV system should last longer than one which has one of those failing. The oil catch can just removes the oil from the equation... which stains everything and becomes carbon, removing BTU's and octane from gas. Better to get rid of it
Cool, I appreciate videos like this! I’m considering installing one of these on my “new to me” 2018 3.6 Sahara 6 speed. Just got it with 35k on the engine so pretty low mileage. Any updates with it so far and do you roughly remember what the mileage on the engine was when you recorded this? I know this video is a few years old at this point. Just curious. Thanks and have a great rest of your day!
Unless you are doing some hard rock crawling where you might get hung up at a steep pitch angle, there really isn’t much point you can do adding it. We are currently at 104,000 miles and installed it around 20,000.
@@TrailTraveler Well dang, I appreciate the instantaneous reply!! I do value your input and I’m glad to hear the old girl is still going strong at 104k!! I’m planning on doing some wheeling, but nothing too serious. I guess if for anything else, it would be good for piece of mind. I’m just that kind of person. Well anyways, cheers and thanks for the reply!
@@TrailTraveler ohhh, I’m really sorry to hear that. Thanks for letting me know that. I’ll be sure to scour your channel to see what happened and what I can learn. Thanks again and sorry that happened. Dang
On the argument about "crankcase oil vapors lubricating engine parts"... anyone who say this has zero knowledge of engineering. Perhaps they think about 2 stroke engines, which have severely different ring seals on their pistons. 4 stroke engines have a set of 1+3 or even 4 rings to razor clean excessive oil, then a complete removal and then the last one or two for detonation resistance. Any oil going into the combustion chamber will only produce carbon deposits in every surface, including the top and most importan rings, as well as to reduce octane and energy from the fuel befor detonation. Oil Catch Cans are useful for all types of injection/carburetion engines... but a must for GDI ones.
Good video. Direct injection or not some study has gone into how burnt oil can foule the catalytic converter. Typically on older oil types with high zink content or performance oil. And you'll see more oil collection as the vehicle gets older or running higher rpms on long highway pulls or in the very cold. For anyone who says it's needed for lubrication remember, the exhaust valves don't see that oil like the intake valves do because it's burnt and they still operate fine. And with respect, the video title is "3.8" and it's a 3.6. Folks can find content better for this Jeep if you edit that.
"Lubrication" lol Some people think of Two Stroke Engines and think all work the same... geez! You got it right... but forgot about what happens to engine oil when it gets into the combustion chamber: it becomes carbon, and contaminate everything specially the rings and the intake valves, more with GDI but all are the same: gasoline doesn't clean that well And to have those gases in the combustion chamber means less BTU and octane from the gasoline... there is no defense for not installing an OCC
it would have went straight to your catalytic converters... I'm definitely getting one converters are expensive... And it's not good on your plastic intake and seals either.
If you off road I believe they are worth it. When you are inclined and the oil goes to the back of the engine cover and you have smoke coming out your exhaust I don't believe it does your CAT's any favors.
Good video.
The idea about removing crankcase gases is because with each detonation there is filtration thru the piston rings... that means partially fuel gases and other hydrocarbons go thru from the combustion chamber into the crankcase contaminating the engine oil.
Contaminating means degrading it, removing it's lubricating and thermal properties... etc.
But when oil warm up to operating temperatures, between 85 to 110 Celsius, these contaminants or some of them become gases again...
A car that gets used regularly on long runs, like 1 hour freeway, with a working PCV system should last longer than one which has one of those failing.
The oil catch can just removes the oil from the equation... which stains everything and becomes carbon, removing BTU's and octane from gas.
Better to get rid of it
Cool, I appreciate videos like this! I’m considering installing one of these on my “new to me” 2018 3.6 Sahara 6 speed. Just got it with 35k on the engine so pretty low mileage. Any updates with it so far and do you roughly remember what the mileage on the engine was when you recorded this? I know this video is a few years old at this point. Just curious. Thanks and have a great rest of your day!
Unless you are doing some hard rock crawling where you might get hung up at a steep pitch angle, there really isn’t much point you can do adding it. We are currently at 104,000 miles and installed it around 20,000.
@@TrailTraveler Well dang, I appreciate the instantaneous reply!! I do value your input and I’m glad to hear the old girl is still going strong at 104k!! I’m planning on doing some wheeling, but nothing too serious. I guess if for anything else, it would be good for piece of mind. I’m just that kind of person. Well anyways, cheers and thanks for the reply!
Actually, we just replaced the engine a few weeks ago, it had a major failure. I have a video discussing what happened
@@TrailTraveler ohhh, I’m really sorry to hear that. Thanks for letting me know that. I’ll be sure to scour your channel to see what happened and what I can learn. Thanks again and sorry that happened. Dang
On the argument about "crankcase oil vapors lubricating engine parts"... anyone who say this has zero knowledge of engineering.
Perhaps they think about 2 stroke engines, which have severely different ring seals on their pistons. 4 stroke engines have a set of 1+3 or even 4 rings to razor clean excessive oil, then a complete removal and then the last one or two for detonation resistance.
Any oil going into the combustion chamber will only produce carbon deposits in every surface, including the top and most importan rings, as well as to reduce octane and energy from the fuel befor detonation.
Oil Catch Cans are useful for all types of injection/carburetion engines... but a must for GDI ones.
Good video. Direct injection or not some study has gone into how burnt oil can foule the catalytic converter. Typically on older oil types with high zink content or performance oil. And you'll see more oil collection as the vehicle gets older or running higher rpms on long highway pulls or in the very cold. For anyone who says it's needed for lubrication remember, the exhaust valves don't see that oil like the intake valves do because it's burnt and they still operate fine. And with respect, the video title is "3.8" and it's a 3.6. Folks can find content better for this Jeep if you edit that.
"Lubrication" lol
Some people think of Two Stroke Engines and think all work the same... geez!
You got it right... but forgot about what happens to engine oil when it gets into the combustion chamber: it becomes carbon, and contaminate everything specially the rings and the intake valves, more with GDI but all are the same: gasoline doesn't clean that well
And to have those gases in the combustion chamber means less BTU and octane from the gasoline... there is no defense for not installing an OCC
it would have went straight to your catalytic converters... I'm definitely getting one converters are expensive... And it's not good on your plastic intake and seals either.
could you do a video at 5,000 to see how much oil you catch
I get about 1/8 Cup every 10,000 miles
If you off road I believe they are worth it. When you are inclined and the oil goes to the back of the engine cover and you have smoke coming out your exhaust I don't believe it does your CAT's any favors.