How to drain the AVO catch can? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Flasher · 05-31-2018, 04:58 AM

Title says it all. I've had the Avo catch can ever since I got my Avo turbo kit installed. I've been running it now for a few years, never actually cared to drain it, since I believe that it is circulating the catched oil vapors back to the oil pan.

So I don't even know if it is necessary to drain it at all. At least I couldn't find any valve or drainplug.

Irace86.2.0 · 05-31-2018, 12:03 PM

I don’t know much about that can but it should work like every other can with a line in and a line out. If there is a third line that T’s into your oil drain line for your turbo or something then yes it is dumping contents back into your oil. If the line isn’t directly on the bottom of the can then there may be oil sludge building in the can. It seems like the can is a closed system so you would have to remove the can completely and run solvent through it to clean out the sludge.

Most of blow by gasses are fuel. The fuel vapor is less dense than the oil vapor so oil would collect at the bottom more, and over time it could thicken like it does in oil pans, so periodic cleanings may be a good idea.

JazzleSAURUS · 05-31-2018, 01:16 PM

Is this what you have?
http://www.theboostlab.com/scion-fr-...atch-tank-n-a/

It looks like undoing the drain on the right side should do the trick. I'd drain it every oil change, and if you get nothing out, or next to nothing, just do it every other change to be sure you're keeping an eye on it.

Flasher · 06-01-2018, 03:31 AM

This is the one I have

http://www.avoturboworld.com/catalog...roducts_id/279

It does have some blocked off ports on the top and bottom of the sideface, but not sure if I should start messing with it and having it leaking afterwards.

05-31-2018, 04:58 AM	#1
Flasher Smartass Join Date: Jan 2013 Drives: Toyota GT86 & Impreza STi Location: Germany Posts: 104 Thanks: 60 Thanked 17 Times in 10 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	How to drain the AVO catch can? Title says it all. I've had the Avo catch can ever since I got my Avo turbo kit installed. I've been running it now for a few years, never actually cared to drain it, since I believe that it is circulating the catched oil vapors back to the oil pan. So I don't even know if it is necessary to drain it at all. At least I couldn't find any valve or drainplug. __________________ Toyota GT86, Leather, JBL-Sound, Aero-Kit, inferno orange MODS \|O.Z Leggera 18 x 8,5\|Front:Tarox B32\|Rear:OEM+EBC GreenStuff\|Braided Lines\|Milltek CAT-Back & Overpipe\|Motiv Concepts catted Frontpipe\| AVO Turbo\|AVO breather tank\|Mishimoto Oilcooler\|Exedy Stage 1 Clutch\|BeatSonic Sharkfin\|TRD Ducktail\|TRD Aero cover\|Valenti blinker

05-31-2018, 01:16 PM	#3
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 558 Times in 351 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Is this what you have? http://www.theboostlab.com/scion-fr-...atch-tank-n-a/ It looks like undoing the drain on the right side should do the trick. I'd drain it every oil change, and if you get nothing out, or next to nothing, just do it every other change to be sure you're keeping an eye on it. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

06-01-2018, 03:31 AM	#4
Flasher Smartass Join Date: Jan 2013 Drives: Toyota GT86 & Impreza STi Location: Germany Posts: 104 Thanks: 60 Thanked 17 Times in 10 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	This is the one I have http://www.avoturboworld.com/catalog...roducts_id/279 It does have some blocked off ports on the top and bottom of the sideface, but not sure if I should start messing with it and having it leaking afterwards. __________________ Toyota GT86, Leather, JBL-Sound, Aero-Kit, inferno orange MODS \|O.Z Leggera 18 x 8,5\|Front:Tarox B32\|Rear:OEM+EBC GreenStuff\|Braided Lines\|Milltek CAT-Back & Overpipe\|Motiv Concepts catted Frontpipe\| AVO Turbo\|AVO breather tank\|Mishimoto Oilcooler\|Exedy Stage 1 Clutch\|BeatSonic Sharkfin\|TRD Ducktail\|TRD Aero cover\|Valenti blinker

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05-31-2018, 12:03 PM	#2
Irace86.2.0 Senior Member Join Date: Mar 2017 Drives: Q5 + BRZ + M796 Location: Santa Rosa, CA Posts: 7,884 Thanks: 5,668 Thanked 5,805 Times in 3,299 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	I don’t know much about that can but it should work like every other can with a line in and a line out. If there is a third line that T’s into your oil drain line for your turbo or something then yes it is dumping contents back into your oil. If the line isn’t directly on the bottom of the can then there may be oil sludge building in the can. It seems like the can is a closed system so you would have to remove the can completely and run solvent through it to clean out the sludge. Most of blow by gasses are fuel. The fuel vapor is less dense than the oil vapor so oil would collect at the bottom more, and over time it could thicken like it does in oil pans, so periodic cleanings may be a good idea.

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