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Old 09-11-2017, 05:50 PM   #1
bentman
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Default 2015 powerstroke ????

I bought a used 2015 6.7 awhile back. It runs fine , plenty of power. The only thing is every oil change it is about 1" low on coolant. I can't find any leaks, no smell nothing. I have a 2009 duramax with 237,000 and have never added coolant.
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Old 09-11-2017, 06:10 PM   #2
WItoTX
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Quote:
Originally Posted by bentman View Post
I bought a used 2015 6.7 awhile back. It runs fine , plenty of power. The only thing is every oil change it is about 1" low on coolant. I can't find any leaks, no smell nothing. I have a 2009 duramax with 237,000 and have never added coolant.
Does it go any lower than an 1" low? Might not be a big deal if it just sticks at an inch low.

Side note, you got a photo of that car in your avatar? A '68 Roadrunner is a dream car for me.
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Old 09-11-2017, 06:18 PM   #3
Jakesfish
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Is it possible that its going through another route..?? intake leak, head gasket, out the exhaust..???
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Old 09-11-2017, 06:21 PM   #4
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I have changed the oil 3 times, every 6,000 miles and each time it is about 1" low. Its going somewhere just need to figure out where. 73 RR with a 360 stroked out to a 414 big cam small street carb with AC. 11:1 motor will run on pump gas but it really likes 100 octane. motor dynode @ 505hp TQ was 575 its a beast of a motor it will smoke the tires thru all 3 gears
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Old 09-11-2017, 06:23 PM   #5
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No water in the oil. no loss of power
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Old 09-11-2017, 06:24 PM   #6
boh347
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Notorious for cracking around the sides of the radiator. Mine started to do it and a buddy's aswell.
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Old 09-11-2017, 06:27 PM   #7
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boh347....I cant smell anything, if the radiator was cracked I would think there would be a drip and coolant smell.
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Old 09-11-2017, 06:30 PM   #8
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http://www.powerstroke.org/forum/#/topics/480202

Get under and check with a flash light.
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Old 09-11-2017, 06:39 PM   #9
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I have camped out under the truck with a flashlight I cant find anything.
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Old 09-11-2017, 06:46 PM   #10
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Pressurize the system. If there are any leaks, that will show them


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Old 09-11-2017, 07:13 PM   #11
boh347
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Quote:
Originally Posted by bentman View Post
I have camped out under the truck with a flashlight I cant find anything.
Did you looks when the motor was operating temp?
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Old 09-11-2017, 09:17 PM   #12
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Temp is fine its not losing enough coolant to get hot
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Old 09-11-2017, 09:25 PM   #13
boh347
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Quote:
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Temp is fine its not losing enough coolant to get hot
Not what I meant, did you look for a leak when the motor was at operating temp? A lot of times the heat will expand a crack that wouldn't leak cold.
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Old 09-11-2017, 09:27 PM   #14
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Quote:
Originally Posted by boh347 View Post
Notorious for cracking around the sides of the radiator. Mine started to do it and a buddy's aswell.
I was going to mention this. I had a 97 z71 that had a crack in the radiator tank. I could add coolant every day and it would need it the next. But I could go fora year without putting it in there and it would never get hot. Would pressurize just enough to leak so much and then quit. Don't think I ever smelled any thing wither
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Old 09-11-2017, 10:01 PM   #15
bentman
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Yes I parked it on a curb and crawled underneath when the motor was up to temp. Any other ideals anyone has would be helpful?????
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Old 09-13-2017, 01:40 PM   #16
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my 2011 6.7 i never added coolant a single time . . . . .can't tell you whats wrong but thats strange
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Old 09-13-2017, 01:47 PM   #17
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Quote:
Originally Posted by bentman View Post
Yes I parked it on a curb and crawled underneath when the motor was up to temp. Any other ideals anyone has would be helpful?????


It's the radiator dude. Drivers side, bottom corner. I'd bet a miniature unicorn on it.

Only leaks when running down the highway, and just leaks a little bit.

Get on Powerstroke.org and read til your eyes bleed...
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Old 09-13-2017, 02:29 PM   #18
bentman
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I just had someelse tell me the exact same thing. Next road trip I'm going pull over and look for a leak.if that is hopefully it will not be expensive.
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Old 09-13-2017, 04:03 PM   #19
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Not sure about a diesel but you can usually buy radiators on Amazon for <$100.
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Old 09-13-2017, 04:23 PM   #20
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I have the same issue. Will check mine soon
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