Mishimoto Oil Catch Can doing its job!

[Marky]

I bought my 2018 Civic Si with 1k miles on it and installed the Mishimoto oil catch can at 1500 miles in late December. I put roughly 3k miles on it through a Chicago winter and have garage kept the car overnight. Approaching 4600 miles with 20% oil life left so performed my first oil change this week in early April. I figured now is a good time to have a look to see if the catch can is doing anything at all. To my surprise it was slightly more than half full! I swirled the contents around and sniffed it trying to gauge if it was thick indicating mostly oil which it wasn't It had a hint of gasoline smell, was tinted brown like oil and I surmised prob a decent amount of water? I have not had the cold idle recall work don to the car...yet. Anyway I'm glad I installed the can as less of this stuff on the backside of my DI intake valves the better!

 

[saiko21]

most of that is water or moisture

 

[hobby-man]

most of that is water or moisture

The oil and water wouldn't mix, so he should pour it in something glass and see where the separation later is

 

[saiko21]

The oil and water wouldn't mix, so he should pour it in something glass and see where the separation later is

yeah, that's the reason for that color as water and oil won't mix. Also, as @MAPerformance posted the Si Engine doesn't need a oil catch can as the factory system can handle it. The oil get's condensed because the catch can would be cooler as it's externally mounted to firewall away from engine.

 

[hobby-man]

yeah, that's the reason for that color as water and oil won't mix. Also, as @MAPerformance posted the Si Engine doesn't need a oil catch can as the factory system can handle it. The oil get's condensed because the catch can would be cooler as it's externally mounted to firewall away from engine.

I was waiting for someone else to link that MAPerformance write-up. Decided not to get a catch can based on that.

 

[Tenshi]

That is a good score in the catch can. Mine has very little in it due to the mild AZ weather. I think it provides peace of mind if nothing else. Some say it isn't necessary and I'll believe them when they dump that sludge into their air intake where it belongs

 

[amirza786]

I bought my 2018 Civic Si with 1k miles on it and installed the Mishimoto oil catch can at 1500 miles in late December. I put roughly 3k miles on it through a Chicago winter and have garage kept the car overnight. Approaching 4600 miles with 20% oil life left so performed my first oil change this week in early April. I figured now is a good time to have a look to see if the catch can is doing anything at all. To my surprise it was slightly more than half full! I swirled the contents around and sniffed it trying to gauge if it was thick indicating mostly oil which it wasn't It had a hint of gasoline smell, was tinted brown like oil and I surmised prob a decent amount of water? I have not had the cold idle recall work don to the car...yet. Anyway I'm glad I installed the can as less of this stuff on the backside of my DI intake valves the better!

As others have mentioned, In colder climates where the car is driven short distances it is not given the chance to reach 212 degrees F (operating temp), moisture will accumulate in the oil due to not being given a chance to burn off. I have read that Honda engines don't have the same carbon build up issue as VW and Audi engines where this is a problem (something about the way Honda angles the injectors)

 

[Marky]

That is a good score in the catch can. Mine has very little in it due to the mild AZ weather. I think it provides peace of mind if nothing else. Some say it isn't necessary and I'll believe them when they dump that sludge into their air intake where it belongs

Yes for me less of anything hitting the back of the intake valves is a positive and the peace of mind knowing it's catching oil, water, bit of fuel, whatever is a plus. My morning drive is only 2.5 miles to the train and then back in the evening so I'm hardly getting it up to operating temps. Definitely happy about the $120 or so I spent on a used can!

 

[das borgen]

to where is it plumbed?

 

[MANIACAL FORTE]

I was waiting for someone else to link that MAPerformance write-up. Decided not to get a catch can based on that.

I'm beginning to think this may be true even more than you think. After 20,000 miles I ran a q-tip through the original pcv hose and it came out surprisingly clean, so there can't be too much oil and fuel going back into the engine.

 

[HomieGohan]

yeah, that's the reason for that color as water and oil won't mix. Also, as @MAPerformance posted the Si Engine doesn't need a oil catch can as the factory system can handle it. The oil get's condensed because the catch can would be cooler as it's externally mounted to firewall away from engine.

Would the same thing be for a Fk8 that is being tracked? I still will go look at the MAPerformance write up

 

[ATM]

how often do you have to discard that or check on it?

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