• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Explorer ST Forum and Explorer ST community dedicated to Explorer ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Explorer ST Forum today!


ALL YOU CATCH CAN GUYS; How much oil?

OP
JohnE

JohnE

Active Member
Thread Starter #21
Messages
513
Reactions
281
Points
82
Location
Vancouver, WA, USA
Thread Starter #21
sadeen said:
total catch can accumulation after ~15k.
Click to expand...
That’s about as much as I’m getting too. I’m used to seeing A LOT more than that with a former 2017 GMC 5.3 truck and a 7.0 LS7 in a Z06. These 3.0’s must be pretty tight.
 

S

Svt95gt

New Member
U.S. Marine Veteran
#23
Messages
23
Reactions
5
Points
2
Location
Missouri
Vehicle
2021 Explorer ST
#23
Asking a newb question based on this thread... If there's so little, do you even need the catch can?
 

Stone17

Stone17

Member
#24
Messages
373
Reactions
234
Points
37
Location
Houston, TX, USA
Vehicle
2022 Ford Explorer ST
#24
Svt95gt said:
Asking a newb question based on this thread... If there's so little, do you even need the catch can?
Click to expand...
This is from my old 2011 Ford Flex Eco boost with 140K miles. All that oil build up. Catch can will help remove the oil from entering the intake.
 

Attachments

S

Svt95gt

New Member
U.S. Marine Veteran
#25
Messages
23
Reactions
5
Points
2
Location
Missouri
Vehicle
2021 Explorer ST
#25
So these catch cans (and experts correct me if I'm wrong here) catch the oil and water condensate, but wouldn't there still be vapor that passes through anyway? Someone said earlier the engine heats up and would evaporate the water in the can...are we saying that the catch can if far enough away that the oil condensate deposits into the can and doesn't keep trucking into the motor?

Sorry if my questions are off the OG topic. Just trying to learn, I honestly don't know.
 

F=MA

F=MA

Active Member
#26
Messages
947
Reactions
623
Points
232
Location
Wichita, KS, USA
#26
UPR catch can. Small Sonic cup. This much every 5000 to 7000 miles.
IMG_3148.JPG IMG_3149.JPG
 

OP
JohnE

JohnE

Active Member
Thread Starter #27
Messages
513
Reactions
281
Points
82
Location
Vancouver, WA, USA
Thread Starter #27
Svt95gt said:
So these catch cans (and experts correct me if I'm wrong here) catch the oil and water condensate, but wouldn't there still be vapor that passes through anyway? Someone said earlier the engine heats up and would evaporate the water in the can...are we saying that the catch can if far enough away that the oil condensate deposits into the can and doesn't keep trucking into the motor?

Sorry if my questions are off the OG topic. Just trying to learn, I honestly don't know.
Click to expand...
Water (condensation) isn’t the issue, only the oil is. Water doesn’t leave deposits on the valves and pistons like oil does. Water collects in the crankcase in the form of condensation after a warm engine cools down, and is most evident when the relative humidity is high. When the engine is again started and warmed up, the water turns to vapor and with the absence of catch can, gets pulled into the induction system and burned off in the combustion chamber and exits through the exhaust. No harm no foul. There’s always some water in the air. When a catch can is installed, it just catches the water before entering the induction system, just as it catches the oil mist. If the catch can is located in an area that doesn’t get that hot, it won’t evaporate off as fast and get pulled into the intake and will stay in the catch can. It looks ugly but it makes no difference if it stays in the can or gets burned in the combustion chamber. Hope that helps.
 

S

sadeen

Member
#28
Messages
358
Reactions
194
Points
37
Location
Ashburn, VA
Vehicle
2020 Explorer ST
#28
Svt95gt said:
Asking a newb question based on this thread... If there's so little, do you even need the catch can?
Click to expand...
I would certainly buy one again. It's enough crap that I would prefer to not go thru the intake.
 

S

Svt95gt

New Member
U.S. Marine Veteran
#29
Messages
23
Reactions
5
Points
2
Location
Missouri
Vehicle
2021 Explorer ST
#29
JohnE said:
Water (condensation) isn’t the issue, only the oil is. Water doesn’t leave deposits on the valves and pistons like oil does. Water collects in the crankcase in the form of condensation after a warm engine cools down, and is most evident when the relative humidity is high. When the engine is again started and warmed up, the water turns to vapor and with the absence of catch can, gets pulled into the induction system and burned off in the combustion chamber and exits through the exhaust. No harm no foul. There’s always some water in the air. When a catch can is installed, it just catches the water before entering the induction system, just as it catches the oil mist. If the catch can is located in an area that doesn’t get that hot, it won’t evaporate off as fast and get pulled into the intake and will stay in the catch can. It looks ugly but it makes no difference if it stays in the can or gets burned in the combustion chamber. Hope that helps.
Click to expand...
Awesome! Thanks for the explanation John.
 

R2D2

R2D2

Member
#30
Messages
293
Reactions
220
Points
37
Location
LA, California
Vehicle
2022 Explorer ST
#30
Disclaimer - I have zero knowledge in this area. Please forgive the following questions, if it's obvious to others.
1. If the oil entering the intakes is really an issue, why there is nothing from OEMs to stop this?
2. With the new vehicle under warranty (thinking of extending it), even if there is a failure, doesn't this get covered?
3. If I add a catch can, in CA, am I in trouble with warranty/smog test etc?
 

C

Cmaximst

Member
#31
Messages
85
Reactions
34
Points
17
Location
Detroit, MI, USA
#31
FYI, you can remove it and replace the original hoses in about 10 minutes
 

mycbtech

mycbtech

Member
#32
Messages
239
Reactions
146
Points
37
Location
Sacramento, CA
Vehicle
2022 ST
#32
R2D2 said:
Disclaimer - I have zero knowledge in this area. Please forgive the following questions, if it's obvious to others.
1. If the oil entering the intakes is really an issue, why there is nothing from OEMs to stop this?
2. With the new vehicle under warranty (thinking of extending it), even if there is a failure, doesn't this get covered?
3. If I add a catch can, in CA, am I in trouble with warranty/smog test etc?
Click to expand...
Yes, you would fail smog with this installed in CA
 

S

sadeen

Member
#34
Messages
358
Reactions
194
Points
37
Location
Ashburn, VA
Vehicle
2020 Explorer ST
#34
total catch can accumulation after ~45k. I had kinda forgotten to empty it for some time (e.g. last pic...) and it had a lot in it this time. In the past it had been a thin liquid, this time there was some sludge in the bottom. My bad for not emptying it more often. I do have the extended can from J&L which probably saved my poor ST from drowning.
 

Attachments

You must log in or register to reply here.

Explorer ST Posts



Top