Guide: CX-5 Universal Oil Catch Can Installation

yrwei52

2016 Mazda CX-5 GT AWD w/Tech Pkg
Contributor
:
Plano, Texas, USA
hmm, then I'm watched the wrong videos. I saw felilxd videos. From his valve cleaning video at about 28km to this catch can disassembly video at 41km (13km or ~ 8k miles), he observes *some* oil, but unless I missed where he drained the intake manifold and measured, it would appear to be fractions of an ounce coating the intake manifold. Did Felix quantify it further? Otherwise, I too am waiting for felix to post results from his catch can use. If it captures a *significant* amount of oil, I'll wait until after 60k miles to consider a catch can, so as not to risk drivetrain warranty.

We also don't know whether his (our) PCV valve condition contributes to the oil consumption. You might/should have to clean it or replace at regular intervals, which requires an intake manifold removal anyway.

Something else to consider; manual valve cleaning was really quite simple to do at about 30k miles. There was minor carbon buildup at that point, and I'm glad to repeat that procedure every 30k ~ 50k miles or so, especially if a capture can is only moderately effective.
felixd’s first video had a lot of oil dripping out from intake manifold when he took it out and cleaned the valve carbon deposit. This video the valve looked a lot better, and the oil was a lot less in the manifold. He put the catch can, I believe, mainly because he saw so much oil the first time he took the manifold out. Chris_Top_Her can tell you how much oil he got in his catch can if he saw the discussion here.
 

AVC

:
'17 CX-5 Select
I have seen this video. Very good. And to my point....not much oil, at least for his VW. Mostly water and blowby products, which aren't the primary cause of carbon buildup on intake valves, as I understand it.
 
felixd’s first video had a lot of oil dripping out from intake manifold when he took it out and cleaned the valve carbon deposit. This video the valve looked a lot better, and the oil was a lot less in the manifold. He put the catch can, I believe, mainly because he saw so much oil the first time he took the manifold out. Chris_Top_Her can tell you how much oil he got in his catch can if he saw the discussion here.
I would like to add in this 2nd video there's also a good amount of oil trapped within the intake manifold i forgot to add to this video clip.
 

AVC

:
'17 CX-5 Select
Did you drain the intake to get an approx measurement trapped in there? Otherwise, all I remember in the video is some accumulation around the manifold ports, which might look like a lot, but may be fractions of an ounce in reality. And in the 2nd vid, 13km had elapsed since you first vid? Does your catch can have a sintered bronze filter?

And note that I *want* a catch can to be effective, but there are so many ineffective aftermarket solutions, all claiming to solve things "the dullard OEM's couldn't be bothered to solve". From the near-cult addiction to certain oil brands, viscocities, additives, change intervals, oil filter wars, intake system battles, spark plugs... Now days, I just start off cynical of new products, until someone(s) OTHER THAN the manufacturer or sponsored party perform controlled tests. Project Farm is quite good at this.

Andm BTW, thank for the inspiration to pull the intake to clean valves! At about 30k miles, I did't have significant manifold oil accumulation, nor any dramtic carbon build up on the valves. I cleaned them anyway, but there wasn't much (if any) change in drivability, smoothness or MPG.
 
Last edited:
:
13' CX-5 and 16' Mazda6 both Touring w/Tech/Bose
hmm, then I'm watched the wrong videos. I saw felilxd videos. From his valve cleaning video at about 28km to this catch can disassembly video at 41km (13km or ~ 8k miles), he observes *some* oil, but unless I missed where he drained the intake manifold and measured, it would appear to be fractions of an ounce coating the intake manifold. Did Felix quantify it further? Otherwise, I too am waiting for felix to post results from his catch can use. If it captures a *significant* amount of oil, I'll wait until after 60k miles to consider a catch can, so as not to risk drivetrain warranty.

We also don't know whether his (our) PCV valve condition contributes to the oil consumption. You might/should have to clean it or replace at regular intervals, which requires an intake manifold removal anyway.

Something else to consider; manual valve cleaning was really quite simple to do at about 30k miles. There was minor carbon buildup at that point, and I'm glad to repeat that procedure every 30k ~ 50k miles or so, especially if a capture can is only moderately effective.

He works on other people's cars. How do we know its the same car?
 

yrwei52

2016 Mazda CX-5 GT AWD w/Tech Pkg
Contributor
:
Plano, Texas, USA
He works on other people's cars. How do we know its the same car?
In this video felilxd did say the oil in intake manifold and the carbon deposit on valves are less than last time he took the manifold out for cleaning the deposit. So we can assume it’s the same CX-5 in 2 videos.
 
He works on other people's cars. How do we know its the same car?
it is the same car.. i dont work on other peoples car.
You need a 2nd catch can to see how much blow by is getting past the 1st catch can :)
I think one is enough :D
Did you drain the intake to get an approx measurement trapped in there? Otherwise, all I remember in the video is some accumulation around the manifold ports, which might look like a lot, but may be fractions of an ounce in reality. And in the 2nd vid, 13km had elapsed since you first vid? Does your catch can have a sintered bronze filter?

And note that I *want* a catch can to be effective, but there are so many ineffective aftermarket solutions, all claiming to solve things "the dullard OEM's couldn't be bothered to solve". From the near-cult addiction to certain oil brands, viscocities, additives, change intervals, oil filter wars, intake system battles, spark plugs... Now days, I just start off cynical of new products, until someone(s) OTHER THAN the manufacturer or sponsored party perform controlled tests. Project Farm is quite good at this.

Andm BTW, thank for the inspiration to pull the intake to clean valves! At about 30k miles, I did't have significant manifold oil accumulation, nor any dramtic carbon build up on the valves. I cleaned them anyway, but there wasn't much (if any) change in drivability, smoothness or MPG.
The oils inside the intake manifold isn't too much. but i can confirm it is about 50ml - 60ml of oil accumulate inside the intake manifold after 13 - 14K kms after my previous intake manifold clean up. Maybe Best thing to do if you don't have catch can install as yet . Get sort of a vacuum tool / syringe with tube attached and uninstall the throttle body to vacuum out the excess oils trapped inside the intake manifold.
 
Did you drain the intake to get an approx measurement trapped in there? Otherwise, all I remember in the video is some accumulation around the manifold ports, which might look like a lot, but may be fractions of an ounce in reality. And in the 2nd vid, 13km had elapsed since you first vid? Does your catch can have a sintered bronze filter?

And note that I *want* a catch can to be effective, but there are so many ineffective aftermarket solutions, all claiming to solve things "the dullard OEM's couldn't be bothered to solve". From the near-cult addiction to certain oil brands, viscocities, additives, change intervals, oil filter wars, intake system battles, spark plugs... Now days, I just start off cynical of new products, until someone(s) OTHER THAN the manufacturer or sponsored party perform controlled tests. Project Farm is quite good at this.

Andm BTW, thank for the inspiration to pull the intake to clean valves! At about 30k miles, I did't have significant manifold oil accumulation, nor any dramtic carbon build up on the valves. I cleaned them anyway, but there wasn't much (if any) change in drivability, smoothness or MPG.
yes this oil catch can are the replica of MishMoto brand. it comes with bronze filteration.
 
I read some papers that the SkyActiv motor GDI system was designed to minimize carbon buildup and that it is rarely an issue, BUT, requires more than short trips so as the motor reaches a higher temperature to resolve the carbon buildup issue, is this fact or fiction ?
 
:
2019 CX-5 GTR
I read some papers that the SkyActiv motor GDI system was designed to minimize carbon buildup and that it is rarely an issue, BUT, requires more than short trips so as the motor reaches a higher temperature to resolve the carbon buildup issue, is this fact or fiction ?

These all might be of interest:




and



oh the horror!


https://www.reddit.com/r/mazda3/comments/cdpxzs


TLDR; Mazda's engine is just a prone to carbon build up as other manufactures using direct injection .. just the nature of the beast. Negating factors.. drive your vehicle spiritedly often. Use a quality oil, change your oil. But yes you will need to be aware of carbon build up.
 
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