Engine: D5: - Emulsion in coolant expansion tank

morrisminder187 · Feb 26th, 2018, 19:31

V70 D5 2003 Geartronic, 86k miles, regularly Volvo serviced. Just had new G/B oil cooler fitted (original not up to the mark-caravan towing) and noticed emulsion in the expansion tank and cap. Not sure if both events are related. No cooling/coolant issues noted. Any advice appreciated. RMF.

davebb · Feb 26th, 2018, 21:02

Hi what is a G/B oil cooler
Dave

oragex · Feb 26th, 2018, 21:26

The cap must kerp pressure and can fail at the seal. I'd check it first

Paul Wildsmith · Feb 27th, 2018, 11:41

sounds like gearbox oil mixed the cooling. Fix now or you'll ruin your gearbox.

morrisminder187 · Feb 27th, 2018, 13:48

Quote:

Originally Posted by davebb

Hi what is a G/B oil cooler
Dave

G/B = Gear Box, thanks for your interest. MM187

morrisminder187 · Feb 27th, 2018, 13:52

Quote:

Originally Posted by Paul Wildsmith

sounds like gearbox oil mixed the cooling. Fix now or you'll ruin your gearbox.

Hi Paul, thanks for reply - will heed your advice MM187

harveys · Feb 28th, 2018, 18:13

The gearbox oil cooler is inside the side tank of the engine cooling radiator.
Or are you talking about the engine oil cooler on the back of the sump.

Sorry I see you fitted a auxiliary gearbox cooler.
the cooler on the sump can leak engine oil into the coolant .

morrisminder187 · Mar 23rd, 2018, 19:46

Quote:

Originally Posted by harveys

The gearbox oil cooler is inside the side tank of the engine cooling radiator.
Or are you talking about the engine oil cooler on the back of the sump.

Sorry I see you fitted a auxiliary gearbox cooler.
the cooler on the sump can leak engine oil into the coolant .

MM187 - thanks for your comments/advice, I will be aware for the future. Immediate problem seems to have gone away after I removed and internally cleaned the coolant expansion tank. Regards MM187

Feb 26th, 2018, 19:31	#1
morrisminder187 New Member Last Online: Feb 25th, 2024 14:15 Join Date: Mar 2012 Location: Bristol	Emulsion in coolant expansion tank V70 D5 2003 Geartronic, 86k miles, regularly Volvo serviced. Just had new G/B oil cooler fitted (original not up to the mark-caravan towing) and noticed emulsion in the expansion tank and cap. Not sure if both events are related. No cooling/coolant issues noted. Any advice appreciated. RMF.

Feb 26th, 2018, 21:26	#3
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	The cap must kerp pressure and can fail at the seal. I'd check it first __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Feb 27th, 2018, 11:41	#4
Paul Wildsmith Register Keeper Last Online: Yesterday 21:01 Join Date: Dec 2001 Location: Bristol	sounds like gearbox oil mixed the cooling. Fix now or you'll ruin your gearbox. __________________ Paul VOC 90's SPARK

Feb 28th, 2018, 18:13	#7
harveys Master Member Last Online: Feb 10th, 2022 22:33 Join Date: Jul 2007 Location: newton abbot in sunny Devon	The gearbox oil cooler is inside the side tank of the engine cooling radiator. Or are you talking about the engine oil cooler on the back of the sump. Sorry I see you fitted a auxiliary gearbox cooler. the cooler on the sump can leak engine oil into the coolant . __________________ Last edited by harveys; Feb 28th, 2018 at 18:17.

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Feb 26th, 2018, 21:02	#2
davebb Premier Member Last Online: Apr 17th, 2024 19:02 Join Date: Aug 2013 Location: Emsworth,hants	Hi what is a G/B oil cooler Dave

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