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Old 13th May 2014, 18:22   #1
Qubit
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Default Oil Cooler Bypass?

How necessary is the oil cooler on the 2.5 V6 engine? Im considering a ZT that seems to have had the oil cooler bypassed according to the owner, but dont know how much of a potential issue it would be?
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Old 13th May 2014, 18:31   #2
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How necessary is the oil cooler on the 2.5 V6 engine? Im considering a ZT that seems to have had the oil cooler bypassed according to the owner, but dont know how much of a potential issue it would be?
If you view the engine as a heat storage unit then the oil being hotter will mean less heat energy taken out of the system, which means the water coolant system would have to work harder to compensate.

with both the water and oil hotter the pressure in those systems would increase and you would be more prone to overheating, hgf and water pump issues.

I am not well versed with that engine but in general that is what I would see occurring.
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Old 13th May 2014, 19:00   #3
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Have a look and see what engines run without a cooler as standard..
i have bypassed the cooler down to issues with coolant flow.
The oil will only ever reach a peak temperature. The hotter the oil, the thinner it gets so recommend fresh 10w40. Having said that, I've not done an oil change yet..
The airflow over the alloy sump itself has a cooling effect, to a degree.
Yes, its there for a reason, But running without it for a short time shouldn't be an issue in my view.
I have considered changing it to an oil/air cooler..
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Old 13th May 2014, 21:57   #4
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Many thanks for the replies. Looks like it might not really be worth it.
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Old 13th May 2014, 22:07   #5
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Has he bypassed it because it was leaking coolant into the oil?
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Old 13th May 2014, 22:12   #6
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Im considering a ZT that seems to have had the oil cooler bypassed according to the owner ..
Keep looking for a better car Tim! The cooler will have been by-passed because the owner doesn't want to repair a fault. There may be other similar problems which you haven't discovered.

Simon
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Old 29th November 2023, 14:56   #7
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Default Oil cooler for my MG ZT-T 190+ 2001 2.5L V6

Hi, I see an air cooled oil cooler is mentioned, does anyone know if there is one that is compatible with my 190+. The PBC101350 cooler on it is shot mixing oil and water, or is there a service kit for it, if servicing is possible.
Regards, Alan
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Old 29th November 2023, 15:14   #8
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DMGRS sell a replacement if it's rectangular one.
https://www.dmgrs.co.uk/products/75-...a7a1ab1d&_ss=r
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Old 29th November 2023, 15:22   #9
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DMGRS sell a replacement if it's rectangular one.
https://www.dmgrs.co.uk/products/75-...a7a1ab1d&_ss=r
Wrong type, the OP wants the early cast aluminium one.
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Old 29th November 2023, 17:59   #10
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Quote:
Originally Posted by SD1too View Post
Keep looking for a better car Tim! The cooler will have been by-passed because the owner doesn't want to repair a fault. There may be other similar problems which you haven't discovered.



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