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04-04-2017, 07:38 PM
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#1
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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Transmission fluid in radiator
Someone please tell me what's going on! !!!?!
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04-04-2017, 07:42 PM
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#2
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Guru
City: Narragansett Bay
Vessel Model: Grand Banks 36 Classic #715
Join Date: Sep 2016
Posts: 1,856
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Transmission cooler is leaking. Radiator shop can fix.
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04-04-2017, 07:44 PM
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#3
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,119
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Radiator?
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04-04-2017, 07:50 PM
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#4
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Guru
City: Narragansett Bay
Vessel Model: Grand Banks 36 Classic #715
Join Date: Sep 2016
Posts: 1,856
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Radiator?
What the hell....why not help the poor guy lol
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04-04-2017, 07:50 PM
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#5
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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I'm hoping it's transmission fluid! Smells like it, no water in oil, no water in transmission fluid,water in heat exchanger has a brownish, yellowish gunk in it. Engine runs smoothly, no smoke, not idling rough, no noticeable leaks around the engine, your comment makes sense. I'm grasping for straws, looking for reassurance that it isn't a blown engine.
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04-04-2017, 07:57 PM
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#6
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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Trying to rule out blown head gasket, is there a way to tell if it's oil or transmission fluid?
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04-04-2017, 08:08 PM
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#7
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,818
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What make and model of engine? Does it have an engine oil cooler in the fresh water loop?
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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04-04-2017, 08:13 PM
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#8
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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It's a 5 cylinder 70 hp '84 Pathfinder with 3500 hrs on it. It has a transmission oil cooler in the fresh water loop.
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04-04-2017, 08:16 PM
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#9
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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I'm hoping the problem is the transmission cooler is leaking into the heat exchanger
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04-04-2017, 08:18 PM
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#10
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,119
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Pictures of what you are talking about.
After rereading this thread, I have no clue what you are trying to describe.
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04-04-2017, 08:19 PM
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#11
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Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
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If tranny cooler is on FW loop, it certainly can put tranny fluid into the coolant. What kind of tranny? Post a few photos of the rig.
Some tranny coolers are pressurized with fluid, some are not. Thus the question.
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04-04-2017, 08:28 PM
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#12
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,818
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This is an SUV (car), isn't it?
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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04-04-2017, 08:28 PM
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#13
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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That pretty much sums it up!!! I'm trying to figure out what is causing the brownish, yellowish gunk that smells like transmission fluid in the heat exchanger. The fact is that the heat exchanger cools the transmission fluid so somewhere during that cooling process transmission oil is getting in the water of the heat exchanger.
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04-04-2017, 08:29 PM
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#14
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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It's a diesel engine in a trawler
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04-04-2017, 08:33 PM
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#15
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Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 3,021
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Cars with automatic transmissions have a tube going thru one of the radiator tanks that cools trans fluid or warms it in cold weather. It's somewhat common the have the tube fail from corrosion/rust. If it's an '84 radiator, the better fix is a new radiator. If too much water gets into the trans, lack of proper lubrication will ruin the trans.
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04-04-2017, 08:35 PM
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#16
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Guru
City: PNW
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,860
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From what you're saying, it's most likely the internal transmission cooling circuit in your heat exchanger has developed a leak.
__________________
Larry B
Careful . . .I Have a Generator and I'm not afraid to use it !
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04-04-2017, 08:48 PM
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#17
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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Just bought the boat, don't know when coolant was changed, all of you have made some good points, thanks so much. Now i have some direction to go in besides the battered mutterings of my mind! I will keep you posted. Let's call it a day and have a tall cool something or other! Thanks again, I am feeling like the signs aren't pointing to a blown engine!
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04-04-2017, 08:59 PM
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#18
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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04-04-2017, 09:00 PM
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#19
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Guru
City: Thibodaux, Louisiana
Vessel Name: Gumbo
Vessel Model: 2003 Monk 36
Join Date: Oct 2007
Posts: 3,882
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If you take a sample of the contaminated coolant you could bring it to a place that does oil analysis they could tell just what kind of oil/ fluid it is. The local caterpillar dealer can tell you where to have it tested. That way you can know where to look for a leak.
Good luck!
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04-04-2017, 09:16 PM
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#20
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Senior Member
City: Biloxi
Join Date: Mar 2017
Posts: 160
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We've arranged for a diesel mechanic to come out tomorrow, great suggestion! I will keep you posted, until then I'm going to go play some trani / heat exchanger/blown head gasket blues on my saxophone!
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