Oil Cooler

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Oil Cooler

Postby transcort » Sun Apr 08, 2018 7:12 pm

Hi' Guys,

Does anybody know if there is a cheap alternative to replace the oil cooler on a 2.5 Diesel XM, such as the Berlingo or C5 type?

Cheers,
transcort
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Re: Oil Cooler

Postby xmexclusive » Sun Apr 08, 2018 9:00 pm

Yes.

One option is two jubilee clips and a 70 mm length of 15mm copper pipe to join the hoses and just link it out.
You can fit a cooler recovered from a 1.9 or 2.1 PSA diesel, you need the matching central hollow screw as the 2.5 one is too long.
Some extra bends will be needed to join up the rubber pipes to the cooler.

John
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Re: Oil Cooler

Postby White Exec » Sun Apr 08, 2018 9:37 pm

Good advice. If your 2.5 oil cooler has sprung a leak or otherwise perished, there's little point in replacing it with new the same, as they are inherently internally fragile.

Hopping it out of circuit (by joining the water hoses as John suggests) is a good move; if oil drips out of either of the 15mm aluminium pipes, then the cooler is internally perforated, and should be removed. As a temporary measure, the two aluminium cooler pipes can be joined with a length of high-pressure hose, to stop oil escape, in addition to joining the two water hoses.

Let us know what the symptoms of failure were - did the cooling system fill with engine oil, for example?

PS
Could you also check your VIN number? - it's not being recognised.
Chris
1996 XM 2.5TD Exclusive RP7165 Polar White
2003 RAV4 D4D 2.0 5dr LHD Silver WORKHORSE
1989 BX19RD Delage Red Deceased; 1998 ZX 1.9D Avantage auto Triton Green Company car 1998-2001; 2001 Xantia 1.8i auto Wicked Red Company car 2001-2003
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Re: Oil Cooler

Postby transcort » Sun Apr 08, 2018 11:07 pm

Thanks Chaps,

'Already tried the "linking it out" method, but the internal perforation pressure is bursting past the high-pressure hose!
I thought that one of the modern versions might be a stronger/improvement over original......
Symptom of failure was oil present floating on top of coolant..........
VIN Number is VF7Y4NY0000NY4221.
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Re: Oil Cooler

Postby White Exec » Mon Apr 09, 2018 7:17 am

The smaller steel versions used on 1.9 and 2.1 vehicles are tougher than the large aluminium unit used on the 2.5. The aluminium unit is probably also more prone to internal corrosion by coolant, especially if coolant strength or renewal hasn't been followed. Having said that, I've had two of these alu units perforate on our 2.5 - the second one, a new and expensive replacement, lasted just 5 years despite best quality coolant. Both filled the cooling system with engine oil. They do not have a good reputation.

If a bridging hose is not managing to hold back the oil pressure, it is possible to simply remove the alu oil cooler (unscrew the central tube, which holds it in place) and mount your oil filter directly on to the mounting flange. (The oil filter and the oil cooler have the same mounting diameters.)
For this, you'll need an appropriately short central threaded tube. You could either acquire one, or get your existing one shortened and threaded - - it's M20, iirc.

To remove all traces of oil from the cooling system (it will damage both hoses and the rubber sealing washer on the pressure cap), this is a highly effective product:
LiquiMoly Radiator Cleaner, Art.No.2506, 300ml. One can is sufficient, although a second could be handy.
Just follow the instructions on the can (or their website). Works far better than d.i.y. attempts with detergent, etc.
Last edited by White Exec on Mon Apr 09, 2018 7:47 am, edited 2 times in total.
Chris
1996 XM 2.5TD Exclusive RP7165 Polar White
2003 RAV4 D4D 2.0 5dr LHD Silver WORKHORSE
1989 BX19RD Delage Red Deceased; 1998 ZX 1.9D Avantage auto Triton Green Company car 1998-2001; 2001 Xantia 1.8i auto Wicked Red Company car 2001-2003
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Re: Oil Cooler

Postby White Exec » Mon Apr 09, 2018 7:18 am

I can't get Service Box to recognise this VIN number - comes back 'invalid'.
Could someone else give it a try?
Could be a problem at the PSA end - the site is a bit sluggish.
Chris
1996 XM 2.5TD Exclusive RP7165 Polar White
2003 RAV4 D4D 2.0 5dr LHD Silver WORKHORSE
1989 BX19RD Delage Red Deceased; 1998 ZX 1.9D Avantage auto Triton Green Company car 1998-2001; 2001 Xantia 1.8i auto Wicked Red Company car 2001-2003
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White Exec
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Re: Oil Cooler

Postby xmexclusive » Mon Apr 09, 2018 8:58 am

2.5 Estate from Vin number ORGA will 6741 or perhaps 6740.
Change over date Bendix to Teves ABS was around then but this one will be one of the final few to have Bendix.

John
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Re: Oil Cooler

Postby White Exec » Mon Apr 09, 2018 9:29 am

Thanks, site now working too.
Chris
1996 XM 2.5TD Exclusive RP7165 Polar White
2003 RAV4 D4D 2.0 5dr LHD Silver WORKHORSE
1989 BX19RD Delage Red Deceased; 1998 ZX 1.9D Avantage auto Triton Green Company car 1998-2001; 2001 Xantia 1.8i auto Wicked Red Company car 2001-2003
User avatar
White Exec
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Posts: 4038
Joined: Fri Mar 11, 2011 7:38 pm
Location: ex-Ealing, Cheshire, W.Sussex & Surrey. Now living in Sayalonga (Malaga, Spain)
Orga / RP numbers: RP7165
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Re: Oil Cooler

Postby xmexclusive » Mon Apr 09, 2018 9:38 am

I have put a couple of smaller metal oil coolers on 2.5 engines.
Never noticed a problem with lack of cooling capacity.
The copper pipe bends and joiners needed tend to go green with coolant seepage over the long term.
The steel coolers though are much stronger and never seen any failures.
All my steel ones have been scrapyard finds.

John
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