Milky white substance in oil
Dec 23, 2011, 08:49 AM
#16
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Are you still on stock head studs? I ended up lifting my head briefly and blew out two freeze plugs on the freeway. More serious than what you have but: I replaced them and the car idled fine in the garage but I didn't want to drive it because I had the same symptoms as you. Oil was fine when drained but the dipstick and oil cap had milky oil on them. Replaced the slightly blown headgasket and headstuds and saved money because I didn't drive it making it worse and need any machine work done. I hope I'm wrong but better safe than sorry!
Dec 23, 2011, 09:41 AM
#18
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Wow...I keep finding more and more posts about the BR catch can causing this problem...I wish i picked up on this before i bought it...I keep hearing really good things about the Saikou Michi cans...What do you guys think???
Dec 23, 2011, 09:56 AM
#19
I never understood the catch can drain back to the oil pan. If moisture condenses into the can during the cool months with the combination of a hot engine bay, all of that water drains back into the oil pan.
As someone asked if run E85, though you dont, E85 has a strong affinity for water. My catch can was about 95% filled over a period of 2 days with water from the hot engine bay, the cold air, and then the fact that E85 draws in water. If I had a catch can that drained back to my oil pan, Id have quite a crazy amount of water in my oil. This was just one cap full of what came out of my catch can during one drain, I emptied out another full detergent capfull of water.
As someone asked if run E85, though you dont, E85 has a strong affinity for water. My catch can was about 95% filled over a period of 2 days with water from the hot engine bay, the cold air, and then the fact that E85 draws in water. If I had a catch can that drained back to my oil pan, Id have quite a crazy amount of water in my oil. This was just one cap full of what came out of my catch can during one drain, I emptied out another full detergent capfull of water.
Dec 23, 2011, 10:10 AM
#20
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The OP starts out by saying his engine is having blow by issues. Well, what is blow by? The two main products of combustion are carbon dioxide and water. So, water is going to the crankcase. It does so to some extent in all our engines. The water will condense from vapor to liquid when it encounters cooler parts of the engine. Would the time of year be winter? So, surprise surprise, water is condensing.
The way to get water out of an engine is a long enough drive to get the engine hot.
Where I live there is a large supermarket 7 blocks from my house. Walmart is about a mile in the opposite direction. I won't make either trip without swinging out on the highway for several miles.
The way to get water out of an engine is a long enough drive to get the engine hot.
Where I live there is a large supermarket 7 blocks from my house. Walmart is about a mile in the opposite direction. I won't make either trip without swinging out on the highway for several miles.
Dec 23, 2011, 10:26 AM
#21
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A catch can drain back has a purpose. But city driving in winter is not it. The engine, when run at high rpm, will pass as much as a quart or more of oil to the catch can per hour. I never heard of an Evo running the 24 hours of Daytona but I know DSM's have. Running on the track for extended periods will run you out of oil without a drain back.
Dec 23, 2011, 10:30 AM
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I was never crazy about catch can dumping back into oil pan.I would get dual seiku michi catch cans with Pcv and 2 check valves.ill post pics of my setup when I get home.
Dec 23, 2011, 11:53 AM
#24
A catch can drain back has a purpose. But city driving in winter is not it. The engine, when run at high rpm, will pass as much as a quart or more of oil to the catch can per hour. I never heard of an Evo running the 24 hours of Daytona but I know DSM's have. Running on the track for extended periods will run you out of oil without a drain back.
Well yes I meant more of for a regular daily driver car, not a track/road race specific setup. I didnt clarify that.
Dec 29, 2011, 12:06 AM
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I made a whole post about it.
https://www.evolutionm.net/forums/ev...ml#post9853060
https://www.evolutionm.net/forums/ev...ml#post9853060
Dec 29, 2011, 10:28 AM
#30
Condensation forms because the catch can has a bottom and is closed off. I don't see this happening on the BR one because it's opened up and the cooling process would be completely different with the heat from the bottom end attributing to it and it not being closed off. It isn't like the water cools, collects, then drains into the oil pan. Buschur has tested this out and shown it to not be the case. All catch cans will catch condensation during the fall/winter/spring because of temperature swings, it is just what happens when you have rapid heating/cooling, there's nothing wrong with it.