Sludge in coolant, high pressure - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**MySons68C20** · Yesterday, 06:34 PM

Quote:

Originally Posted by dmjlambert

That is weird. pour that sludge water in a clear glass and come back and look at it in a week or so and see if it separates into water with oil on the top. I'm sorry to hear you're having this trouble on a new engine.

That is a great idea!

**Steeveedee** · Yesterday, 07:06 PM

I got a face full of black coolant when a vehicle was seriously overheating and I popped the cap. The cap was partially loose and I didn't notice, so when I started to turn it, the coolant spooged. Fortunately I had the radiator water gun in my hand and could do an immediate rinse/cooldown. This could just be from serious overheating? What do the radiator hoses look like inside?

**70STOVEBOLT** · Today, 08:41 AM

If it was oil, it should look like a chocolate milkshake and not black.

Yesterday, 07:06 PM	#27
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,467	Re: Sludge in coolant, high pressure I got a face full of black coolant when a vehicle was seriously overheating and I popped the cap. The cap was partially loose and I didn't notice, so when I started to turn it, the coolant spooged. Fortunately I had the radiator water gun in my hand and could do an immediate rinse/cooldown. This could just be from serious overheating? What do the radiator hoses look like inside? __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

Today, 08:41 AM	#28
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,307	Re: Sludge in coolant, high pressure If it was oil, it should look like a chocolate milkshake and not black. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear



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