Oil in water or is it the stop leak I used? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

AirSpeed · 11-28-2012, 10:55 AM

A week ago I took a little trip in my truck, after about 100 miles I stopped and after ten minutes noticed my radiator started leaking so bought some stop leak crap to get it to stop, it did and I went on my way. Yesterday I decided to flush it out and refill with new antifreeze and found the water was milky. I checked my oil and it was still clean and full. Could it be the stop leak that turned my water milky? The coolant all leaked out while I walked to the nearest parts store so refilled it with water then added the stop leak, I can't remember what brand it was but I remember it was black and chunky! The engine never got hot, the leak didn't start until I shut off the engine. Any idea if the stop leak could be what made my water milky? I flushed it out several times last night and added new antifreeze and so far it's still green.
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**MusicMan70** · 11-28-2012, 11:34 AM

Maybe the "good flush-out" removed what little leakage/cross contamination you still had in the system. If there are no furthur signs of this milky substance then I think you're good to go.

**Stocker** · 11-28-2012, 12:43 PM

It's been decades since I saw stop-leak used (Bar's Leak?). Seems like it was a dark chunky substance, and it did turn the water white & milky.

**Ol Blue K20** · 11-28-2012, 02:08 PM

It sounds like Bars Leak to me. Your probably OK.

Portmod7 · 11-28-2012, 05:43 PM

Oil in the water is extremely rare. I had it happen to a race car motor one time, and nobody I told about it believed me.

So I'm not saying it can't happen, but my bet is on the treatment you put in the coolant.

**special-K** · 11-28-2012, 09:52 PM

If you were getting oil in your coolant,then you'd be getting coolant in your oil and your oil would be milky. That stop leak,as others said,will make the coolant milky.

AirSpeed · 11-28-2012, 11:36 PM

Thanks all! I drove 300 miles today, on my way home I stopped and checked the coolant and it's was nice and clean, still clear and green! I'd never seen oil in water w/out seeing water in the oil either, it sure looked like it though! Had me worried, my engine doesn't have that many miles since it was rebuilt. The stop leak did look like bars leak but I'm pretty sure it was the Car Quest version of it. I need to get a new radiator!
Thanks again!
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11-28-2012, 10:55 AM	#1
AirSpeed Registered User Join Date: Jul 2007 Location: Fall River California Posts: 2,026	Oil in water or is it the stop leak I used? A week ago I took a little trip in my truck, after about 100 miles I stopped and after ten minutes noticed my radiator started leaking so bought some stop leak crap to get it to stop, it did and I went on my way. Yesterday I decided to flush it out and refill with new antifreeze and found the water was milky. I checked my oil and it was still clean and full. Could it be the stop leak that turned my water milky? The coolant all leaked out while I walked to the nearest parts store so refilled it with water then added the stop leak, I can't remember what brand it was but I remember it was black and chunky! The engine never got hot, the leak didn't start until I shut off the engine. Any idea if the stop leak could be what made my water milky? I flushed it out several times last night and added new antifreeze and so far it's still green. Posted via Mobile Device __________________ http://smg.photobucket.com/albums/v655/aaronhero/

11-28-2012, 11:34 AM	#2
MusicMan70 Senior Member Join Date: Feb 2011 Location: Corona, CA Posts: 1,842	Re: Oil in water or is it the stop leak I used? Maybe the "good flush-out" removed what little leakage/cross contamination you still had in the system. If there are no furthur signs of this milky substance then I think you're good to go. __________________ MusicMan70 1961 GMC Suburban

11-28-2012, 12:43 PM	#3
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,728	Re: Oil in water or is it the stop leak I used? It's been decades since I saw stop-leak used (Bar's Leak?). Seems like it was a dark chunky substance, and it did turn the water white & milky. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

11-28-2012, 02:08 PM	#4
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 16,245	Re: Oil in water or is it the stop leak I used? It sounds like Bars Leak to me. Your probably OK. __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul

11-28-2012, 05:43 PM	#5
Portmod7 Registered User Join Date: Dec 2004 Location: Aztec, NM Posts: 388	Re: Oil in water or is it the stop leak I used? Oil in the water is extremely rare. I had it happen to a race car motor one time, and nobody I told about it believed me. So I'm not saying it can't happen, but my bet is on the treatment you put in the coolant. __________________ Super Blue - 1968 C-10 Short Stepside Fastburn 385, 4-Speed Sag. on the Column, Coleman 9" Floater w/Detroit TrueTrac

11-28-2012, 09:52 PM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Oil in water or is it the stop leak I used? If you were getting oil in your coolant,then you'd be getting coolant in your oil and your oil would be milky. That stop leak,as others said,will make the coolant milky. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

11-28-2012, 11:36 PM	#7
AirSpeed Registered User Join Date: Jul 2007 Location: Fall River California Posts: 2,026	Re: Oil in water or is it the stop leak I used? Thanks all! I drove 300 miles today, on my way home I stopped and checked the coolant and it's was nice and clean, still clear and green! I'd never seen oil in water w/out seeing water in the oil either, it sure looked like it though! Had me worried, my engine doesn't have that many miles since it was rebuilt. The stop leak did look like bars leak but I'm pretty sure it was the Car Quest version of it. I need to get a new radiator! Thanks again! Posted via Mobile Device __________________ http://smg.photobucket.com/albums/v655/aaronhero/



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