Oil in coolant with only 55K miles on motor!?

[r6speed]

So this car has been sitting for a couple years...driven every couple months just around the block a few times and started every week just to keep things in order...also change the oil every 6 months even though it still looks brand new. NOW I HAVE OIL IN MY COOLANT! Like said above this car only has 55K miles on it so its killing me that this could be the head gasket. The car has some mods with the 16G and the problem I really have been having is the damn intercooler piping leaks which I just found the main leak (in a weld, go figure) but now I have bigger problems...could anything else be causing this besides the good ole head gasket? i have NEVER overheated this car or abused it AT ALL, this is my baby and I can't believe its doing this! GRRRR

 

[GooeyGus]

I'm not sure if the 2g's have a oil/water oil cooler, but if so, it would be worth checking.

I know the 1g's have issues with the oil cooler leaking and mixing water into the oil or vice-versa. Again, not sure if this is the case with 2g's, but I figured it was worth mentioning

 

[95gst16g]

I'm not sure if the 2g's have a oil/water oil cooler, but if so, it would be worth checking.

I know the 1g's have issues with the oil cooler leaking and mixing water into the oil or vice-versa. Again, not sure if this is the case with 2g's, but I figured it was worth mentioning

+1
Also do a compression test and see what it looks like.You could have crushed a vain in the ofh.If you tighten the threaded thing on the ofh'the one that you screw your filter on to'If that gets overtightened it will do it.

 

[r6speed]

Ok, well first I will just do the compression test...can't hurt thats for sure so I will get back with those results later.

As far as the oil pump I have never messed with the thing I think your talking about. I have messed with where the turbo feed line hooks in with the stainless line but thats it...after the compression test I will definately be checking that though...any way to tell if its tightened too much? Just use torque wrench? Thanks

 

[PieEyedPiper]

Did someone overtighten your oil filter and crush the housing, allowing oil and coolant to mix?

 

[95gst16g]

Did someone overtighten your oil filter and crush the housing, allowing oil and coolant to mix?

Thats what I was trying to say but,you said it more simple.

 

[tvscream]

Thats what I was trying to say but,you said it more simple.

Now thats funny.

 

[r6speed]

I'm sure hoping thats whats wrong...so hopefully I get good pressure on all cylinders and I will move on to that, however I am the only person that has ever changed the oil on this car and I never tighten the filter very much, I know better. BUT I did let my father drive this car a couple weeks ago and it is only a couple inches off the ground so there could be a chance he hit something too I'm not sure since the car is at my shop and I won't be there till later today, I will do the pressure test and check the oil filter to see if it looks damaged tonight and get back. Thanks for all the help

 

[Turbowing]

+1 for compression test and results. Oil filter housing is a possibility, but if your good with changing the filters it might not be the issue.

 

[95gst16g]

Not a problem hope it all works out for you.Remember to warm up the car and keep the throttle wide open when you crank during the compression test.Let us know the results.

 

[GettinPaper]

There is THREE ways oil and coolant mix 1.Through the HEAD GASKET 2. Through the oil cooler. 3.Through the turbo. To test your oil cooler bypass it by connecting the water lines to themselves. Take it for a run with clean water. Then see if oil got in the water if not. Thats your problem! if so its either the HG or Turbo shaft seals.

 

[r6speed]

OK well here is some info that might help things: Turbo is an ebay 16G and yes I know live and learn so that could be the problem and I did mess up when hooking this turbo up by putting #4 stainless line from the pump to the turbo instead of #3...I changed it right away and there was only about 5 minutes of idling with the #4 line, but I have heard that can mess up the turbo so that could be it I guess.

Also like I said before I let my father drive it...who knows maybe it was not good on fluid then and it overheated and he didn't notice, that would really suck that means HQ for sure and resurface probably.

Just to be sure I'm doing this compression test right I take out one plug put in the tester take ALL the plug wires off hold throttle open and crank ten times correct? Thanks


EDIT: One more thing I didn't mention is that the car has been sitting in the freezing cold the last few weeks and its not used to that...if that makes any difference with the oil in the coolant.

 

[JusMX141]

3.Through the turbo.

The chances of coolant and oil mixing within the turbocharger are .000001%.

For this to happen it will literally require the turbo housing to be cracked in a way that would allow the pressurized oil source to meet the coolant chamber without leaking externally, which is damn near impossible.

if so its either the HG or Turbo shaft seals.

Do you understand the purpose of the coolant in a turbo?

The turbine shaft seals do not have anything to do with coolant leakage or coolant and oil mixing.

 

[r6speed]

Ok so I will just rule out the turbo...thought that sounded a bit wierd but hey I'm up for anything but a blown HQ right now.

Results are in:
From left to right: First test 139-122-135-145
second test (only on number 2) 131

I don't know why I got 122 on number 2 on the first try and then 131 on the second but all in all am i safe to think no blown headgasket?

 

[95gst16g]

Ok so I will just rule out the turbo...thought that sounded a bit wierd but hey I'm up for anything but a blown HQ right now.

Results are in:
From left to right: First test 139-122-135-145
second test 131

I don't know why I got 122 on number 2 on the first try and then 131 on the second but all in all am i safe to think no blown headgasket?

Was the car fully warmed up?I did a compression test the other day with a cold motor and then I made sure it was all the way warm next time and got 25psi higher readings and the numbers were way more consistant.Might want to try it again just to be sure.Those numbers arent so good especially for a engine with only 50k

 

[r6speed]

woops ya I missed that step...I didn't warm up the car at all. Will be doing it again tomorrow!

 

[95gst16g]

woops ya I missed that step...I didn't warm up the car at all. Will be doing it again tomorrow!

Haha dont worry about it I got your PM,I will be responding to your thread if I know what is going on.I wont post if I dont know whats going on.I'm only 19,almost 20 and your listening to me!

 

[Project2G]

Coolant causes the lube oil to change chemically as indicated by the milky appearance of the oil. Coolant contaminated oil does not provide the high lubricity required between close tolerance parts, thus causing friction heat. The heat causes more oil deterioration. Sludge begins to form, interfering with:

1. Positive operation of lubrication system pressure regulator valves and the oil by-pass valve.
2. Oil filtration suffers as filter material becomes plugged. The filter may even experience such
high pressure differential that interior parts may collapse.

This contaminated lube oil does not properly lubricate bearings. The first effect is excessive wear to internal engine parts. The oil does not provide the film strength needed between the rod and main bearings and the crankcase journals. High temperature friction melts and welds the bearing surfaces to the journals.

I'm voting head gasket oil cooler crushed / damaged, or cracked block / head. It's much easier to wind up with oil in your coolant from any of these failures than it is coolant in the oil because there will always be greater pressure in the oiling system. Cooling systems operate around 16psi while oiling systems can sometimes exceed 100psi.

 

[r6speed]

That makes sense and yes your probably right its probably something serious but I kinda thought if I had a cracked block or blown headgasket that my compression would have been lower?

 

[Calan]

You can have all kinds of headgasket failures without affecting compression.

http://www.dsmtuners.com/forums/articles-engine-fuel/336535-do-you-have-blown-head-gasket.html

As for doing the compression test properly:

http://www.dsmtuners.com/forums/articles-engine-fuel/338152-compression-test-vs-leak-down-test.html

It also wouldn't hurt to do a leak-down test (see the above article for that as well). A compression test tells you if you can build cylinder pressure; a leak-down test tells you if you can hold it, and if not...where it's going. Although it won't really show leaks between oil and coolant passages, it can tell you if you have an HG failure that is letting cylinder pressure into the coolant...and various types of HG failures tend to run in packs.

 

[r6speed]

Great! Thank you for all that info I will now be doing a compression leak down test as well and will be back with results tonight! Thanks again!

EDIT: Also I forgot to say I checked the oil filter just to assure it not being too tight and I couldn't break it loose by hand like I usually am able to...I don't know how this could have happened since I am the one that always does it and I never tighten the filter but either way guess that could be the problem...doing the leak down test anyways first to see if its worth going any further, If I am losing a lot of pressure I think I'm just going to total this thing and say goodbye DSM...sorry for the negative attitude but I have spent countless hours and $$$ on this thing, so for it to do this now gets me pretty worked up!

 

[slinarez25]

Isn't the oil air cooled on 2g's? Coolant doesn't even touch the oil cooler.

 

[PieEyedPiper]

Isn't the oil air cooled on 2g's?

Nope.

 

[slinarez25]

Nope.

It has to be on some of them, because i custom fabbed a 2g oil cooler on my 1g and its air cooled.

 

[08talon08]

I agree most deffinently do a leak down test that is the only way to be sure a comp test will only show you so much a leak down test will detect the smallest of leaks and were they are coming from it really sounds like a HG though unfortunantly, 2gs dont have an air cooled oil cooler atleast none that i have ever seen or worked on.