: Sludge in my engine?



weister42
11-10-06, 08:50 PM
What is that brown stuff?

http://i82.photobucket.com/albums/j255/weister42/Cars/IMG_0478.jpg

http://i82.photobucket.com/albums/j255/weister42/Cars/IMG_0479.jpg

Ranger
11-10-06, 08:59 PM
Almost looks like cooked oil. Have you overheated? Can you wipe it off with your finger?

Murphyg
11-10-06, 09:06 PM
Ya. Does look doesnt it.
If youve ever over heated your supposed to change your oil immediatally.

weister42
11-10-06, 09:20 PM
Nope never overheated while under my ownership, maybe it blew a gasket before and that's why the dealership gave me a $3,000 discount?

Ranger
11-10-06, 09:45 PM
On second thought, that might just be the color of the cam shaft casting or coating. The lifters under it appear to be pretty clean. See if it wipes off. If it is sludge, which I doubt, it will wipe right off. If all you get on your finger is clean oil, don't worry about it.

smooththg6969
11-10-06, 10:24 PM
I believe it some kind of paint or something to do with the casting as i have it on my sls too i tried wiping its still there. you should be fine .

nigelb
11-11-06, 05:07 AM
looks pretty normal to me.
the camshaft looks like any other camshaft apart from the blob of beige paint on it, probably to identify it as an intake rather than an exhaust during manufacture.

thu
11-11-06, 11:12 PM
Ya, it looks like the color of the metal. The shiny part under the cam looks pretty clean. Also, the filler neck where the cap goes is clean. Is the bottom of the cap clean, too?

N0DIH
11-11-06, 11:35 PM
I would agree, this is a common practice. If someone is on the inside at GM, they have to documentation for something like this, it is commonplace. We did it with OnStar when we needed markings from time to time.


looks pretty normal to me.
the camshaft looks like any other camshaft apart from the blob of beige paint on it, probably to identify it as an intake rather than an exhaust during manufacture.

dp102288
11-12-06, 09:29 AM
I am going to say no. Looks to clean still to be sludge. How does the car run?

codewize
11-12-06, 02:08 PM
When I just looked at the title of this thread 'Glitter on the mattress' came to mind.

I guess I'm in one of those moods today.

acklac7
11-13-06, 12:47 AM
Exact same coating on my 95'..always wonderd what it was/what
purpose it served.

Submariner409
11-13-06, 09:58 PM
:) It's a code marker paint. I've found various shades of the stuff on cams and cranks in early '70's Olds 455 engines which we build for HD boat engine use. How the stuff stands up for 30 years of detergent oil, I'll never know......

Murphyg
11-13-06, 10:06 PM
Is probably the same thing that is used to paint machine tools.
Quite expensive apparently.

davesdeville
11-15-06, 01:20 AM
You're fine.

When I had the pan off my 108k Northstar I noticed it was the cleanest used engine I've seen the guts of.