So, i found some leaks....

[Kalevera]

by the way, can you steal that grand cherokee behind your 525 in the pic and ship it out to me

[liquidtiger720]

Whit...so, i shouldn't be worried about how or why all that crap is there in the fins? Its some really nasty sludgey mud crap that I can't describe.

The oil pan is clean cause i wiped it off. haha.

[Chris'91'525i]

LT
While you have the front cover off, it looks like a good time to take your 525 to a spray and wash,(along with cover-all's, a can of gunk remover and the wheel ramps) to blast all that gunk out from under the car and in the condensor.
Makes it much nicer to work on a clean car, and should make the leaks easier to find too.
Try to avoid blasting electrical connectors, alternator and sealed bearings, ect... with full direct blast pressure to avoid problems.
Just a thought......

[liquidtiger720]

Yea, i plan on doing it some time soon. That, or I'll just slowly clean it peice by peice...which is really fun. haha.

[shragon]

basically, my shop said you want to check to see if the o-rings are bad. my tranny oil cooler was toast though. the tranny oil cooler itself was $213. i'm sure bma would probably be cheaper, but my car was already at shop for an inspection-II, so didn't bother checking. they charged me for 2.5 hrs labor to do the job.

[liquidtiger720]

Thanks Rob.

so which part is the oil cooler? - its that one peice right in front of the radiator right? It is suppose to be unsupported on the driverside? mine seems kind of flimy and can be pushed around.

~its funny, I always thought that was the radiator itself.

[shragon]

i believe so. since it was at the shop, i never took a good look at it. but it made a mess in that area, and they cleaned it up as best as they could. when i got it back, he told me to take it to a pressure washer to wash out what they couldn't get to. basically just sprayed through the front bumper grill. seemed to have worked, no leaks since. oh yea, the leaky tranny oil cooler caused my tranny fluid to be low, which was causing my tranny to slip.

[peterllo]

Picture one shows dreaded green antifreeze. If the hoses are tight look for dried white residue. Go the the area where it is most concentrated. The look for a wet/damp spot.

You could have the expansion tank lower o-ring leaking or like me, the actual crimp between the plastic side tank and aluminum core seeping. Mine leaked in the lower inner drivers side corner. It only leaked when cold, as the radiator heaed up and the plastic/aluminum expanded the leak stopped. To spot this leak you'll need a bright light, the leak may only show as a bright pinprick of light.

Picture two looks, and the seepage along the core support suggests, as if you have a leak at your trans oil cooler. You could try new o-rings at the cooler to raditor lines. Alternatively the cooler could be shot itself. Mine is and I have one one the way. If you pull the radiator look at the cooler, if covered in oil its' done.

The other two, I suggest you look further up on the motor or trans to see where that stuff is leaking down from. Those two really don't show enough to call it.

Hope this helps.

[peterllo]

OIl cooler last week from BMA $219. A radiator in the same ball park.

[shragon]

OIl cooler last week from BMA $219. A radiator in the same ball park.

wow, my mechanic was actually cheaper! (vs. $213) surprising!