Hey everyone, I'm new. Good to be here as a proud new(ish) MB owner.

I picked up a '99 C280 with 173k on it. The owner mentioned that it would need a quart of oil every 1500 miles or so. He's been quite accurate with that figure, and I've put two quarts in over the last 3500 miles. I just put the second in this evening as the dash light lit up. I carry a spare at all times, so I pulled over and tanked it up quickly.

However, I noticed something worrisome on the dipstick. On the bottom nub of the disptick was a bit of tan-colored gunk. It had a light consistency (didn't seem like it was much heavier than the 0W-40 Mobil 1 that I'm running in it).

Any ideas on what this is and what, if anything, I should do about it?

Thanks!

Oil and water mixing. Blown HG. It will get worse- the car will suddenly start randomly overheating.

Hate to say it, but redo it now while it's still manageable before all the oil gets all over the cooling system.

260 miles !!! Thats it ! How did you even find it? Thats nice .... Enjoy man. You will love it