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Topic: Engine sweating (Read 611 times) previous topic - next topic

Engine sweating

Motor home is parked under a metal cover sides open half way down and under side of engine is sweating so there is wet spots under engine it has been raining for last couple of days, when it's dry out it's dry, I don't remember it doing this before I changed antifreeze's, Any thoughts? Is that normal?
Art
1997 Prevost 40'
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Re: Engine sweating

Reply #1 –
Is it possible the block heater is on?
David & DC
97 U320 40' WTBI M11 450 #5153
01 Wrangler Sport
Near Palacios, TX

Re: Engine sweating

Reply #2 –
Art,

If the temperature of the metal is below the current DEW POINT, condensation WILL occur.  So, go to weather underground or other weather site and see what your dew point is.  Compare with temperature of the metal.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Engine sweating

Reply #3 –
Quote from: oldgrayrider –
Is it possible the block heater is on?

No, the block heater would warm the block and cause LESS condensation on the outside of the engine. Said another way, this would be a good way to get rid of the condensation.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Engine sweating

Reply #4 –
Maybe you have a leaky roof on your metal building cover? And it's dripping on coach dripping on ground.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Engine sweating

Reply #5 –
80% humidity  58 degrees dew point it was 50 degrees last night and 64 degrees  now.  Does that hurt anything? Does type of  antifreeze affect that?
Art
1997 Prevost 40'
 The selected media item is not currently available.

Re: Engine sweating

Reply #6 –
Antifreeze would not have anything to do with the condensation. As said above it is a matter of
a temp. difference causing moisture to collect on the engine and other areas where it may collect.
When there is more moisture than can stay on whatever it has accumulated on, you have a drip.
Better to have your RV with a cover over it but the only way you have to prevent the condensation
drip it to go in a climate controlled environment. We all have to deal with this situation, until it gets
colder and drier air moves in.

Carter Langford
Nac-
 

Re: Engine sweating

Reply #7 –
while on the subject of things covering engine etc, does anyone have an idea what causes this that is on the outside of our coach today. Temp is only -7c and lucky not to be as our bit Northern neighbours are as it is -37c, that is almost equal to your -40f.
At least it is dry fluffy snow. ^.^d
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Engine sweating

Reply #8 –
Yes John it's condition known as TFN (to far north) about 65 here in Ajo 45 this morning little cool.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Engine sweating

Reply #9 –
Quote from: John Haygarth –
while on the subject of things covering engine etc, does anyone have an idea what causes this that is on the outside of our coach today. Temp is only -7c and lucky not to be as our bit Northern neighbours are as it is -37c, that is almost equal to your -40f.
At least it is dry fluffy snow. ^.^d
JohnH
Your Bus should be in the South South where it's Warm Warm!! I'm Going to work my Arse off and one winter if only for a couple weeks, I am going to follow you to Mexico so I can learn where to go! So in the event that if that  one day comes where I don't have to  work as much, I can at least go and play if only for a week or two!!  :)
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Engine sweating

Reply #10 –
When the dew point is within 2 degrees of the ambient temperature fog is possible.  Condensation will then occur. 
Laurel Hill, FL
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