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Home > Maintenance & Modifications > Additional sandwich plate oil cooler on a Puma, anyone?
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90 Dreamer



Member Since: 13 Jul 2019
Location: Oop North
Posts: 2126

United Kingdom 2016 Defender 90 Puma 2.2 HT Corris Grey
Sump is probably one of the worst places to monitor oil temps IMO as it will be a low average at best…
Post #1038762 30th Jun 2024 9:31am
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Vitesse



Member Since: 21 Mar 2014
Location: Sussex
Posts: 381

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Santorini Black
Yes possibly but it was the easiest way at the time and it does show me figures at least for comparison.
Normal temp is 85-90 degrees c. Pushes 100 under load etc. 2015 90 XS Santorini Black
Post #1038772 30th Jun 2024 12:40pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 493

United Kingdom 
I've got the 2.2tdci and the oil temp is available as standard on the likes of the torque app.. On a decent run tracelling around 60/70 I'd expect to see 104 to 106 degrees C.. With the coolant fluctuating from 90 to 96, deg..
I fitted a coolant level alarm in the top hose a few months back.. Seems to be doing the job on the odd occasion I've tested it..
Tried to mark it with a yellow mark in attached photo👍
It's an audible alarm and has a led that also flashes when activated.. There is a facility to switch whatever you want when the thing activates, but I've not used that..


Click image to enlarge
Post #1038812 30th Jun 2024 9:03pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2401

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
I guess that is a D Craig coolant alarm.

Is oil pressure available on the 2.2? I guess on the 2.4 is not. Puma 110" SW

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Earth first. Other planets later
Post #1038815 30th Jun 2024 9:37pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3396

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
andy63 wrote:
I've got the 2.2tdci and the oil temp is available as standard on the likes of the torque app..


I think its one sensor combining oil level and oil temperature. Thumbs Up 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1038820 30th Jun 2024 10:29pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2401

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
I believe only oil temp in the Defender 2.2 Puma 110" SW

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Earth first. Other planets later
Post #1038821 30th Jun 2024 10:33pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 493

United Kingdom 
MK wrote:
I guess that is a D Craig coolant alarm

Is oil pressure available on the 2.2? I guess on the 2.4 is not.


That's the name👍... Davies Craig... I couldn't remember it 😩😂

I've only got oil temp to display on the torque app.. As mentioned the sensor does report on oil level but that's not given in the data to display
Oil pressure is not available either, or I've not got it.. Its one gauge I may get round to fitting👍
Post #1038831 1st Jul 2024 5:17am
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Crash7



Member Since: 21 Feb 2024
Location: South
Posts: 31

United Kingdom 
Some great info appearing on this thread Thumbs Up

By the time the cylinder head sensor winds back your ECU, you will have circa 140-150 'c oil temps. - Low coolant alarm is a must IMHO, could those that have them provide images / info on the system?

Alisport use this sensor in their tank, you need to connect it to a light / buzzer.

https://uk.rs-online.com/web/p/float-switc...e&gb=s

The lack of information provided by the Defender dash is woeful, the opportunities for the engine to lunch itself that could be avoided with basic temperature / level info.

Some data, UK Defender, 20'c ambient / air temperature, altitude 200 ft above sea level. 60 mph in 6 gear, flat road, no load in the car, driver only, air con off.

Water / coolant Temperature sits at around 96 - 99'c, with oil temperature at around 105'c.

Fitting a lower temp thermostat (PEL500110) under the same conditions, coolant temp drops to around 88-89'c, however oil temperature stays at around 104'c.

I like the water temperature with a low temp stat, given the rad airflow is blocked by an ac condenser and an intercooler the system seems to do a decent job.

Not so much with the oil temperature, even though the water temperature dropped circa 8 degrees, oil temp dropped 1 degree. As soon as you start adding load, higher ambients and spirited driving the oil temp climbs.

This i feel is due to the engine oil cooler being a very small plate heat exchanger with not enough surface area to bring about the change.

It appears that Defenders in standard trim in non arduous conditions are seeing circa 106 degree oil temps, I would ideally prefer to be around 92 degrees, most agree that 110 is the about as high as you would want to go, there is a reason that most oil stats operate between 82-92 degrees.
Post #1038884 1st Jul 2024 4:36pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2401

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
I use the "enginesaver.com" type.

140-150C is way above accepted running temperature for engine oil. 107C is about the limit AFAIK.

Probably the only way to go (for a non DPF vehicle) is to switch to M1 Ow40 or the like during summer time. Puma 110" SW

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Earth first. Other planets later
Post #1038887 1st Jul 2024 4:50pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3396

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Unsure how much oil goes through the turbo, but guess that must get pretty hot since the turbo is not water cooled. If enough oil is flowing, perhaps a cooler in the turbo drain is not a bad idea. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1038890 1st Jul 2024 5:08pm
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