Gearbox oil cooler

T1tch65 · Feb 14, 2022

Hello
But of advice please.
I removed oil coolant pipes from the oil cooler to check if it’s blocked. Question is should I be able to blow through the coolant pipes easily?

tomcat59alan · Feb 14, 2022

T1tch65 said:
Hello
But of advice please.
I removed oil coolant pipes from the oil cooler to check if it’s blocked. Question is should I be able to blow through the coolant pipes easily?

Go on gis a clue

them Mini cooper oil coolers are a bugger.

T1tch65 · Feb 14, 2022

tomcat59alan said:
Go on gis a clue them Mini cooper oil coolers are a bugger.

If it was a mini. I wouldn’t be posting in here.
But okay I get ya. L322 3.0td

tomcat59alan · Feb 14, 2022

Why would you think it was blocked?

backinblack · Feb 14, 2022

cos he can't blow through it silly

T1tch65 · Feb 14, 2022

It doesn’t like it when it’s warmed up. Read a few posts on here about the coolant side blocking, so before paying out for a new one
Removed both coolant pipes and tried blowing down one. So just asking a question because no way I was blowing through.

T1tch65 · Feb 14, 2022

backinblack said:
cos he can't blow through it silly

Correct
Guess it is blocked then.

Nodge68 · Feb 14, 2022

T1tch65 said:
So just asking a question because no way I was blowing through

You should be able to blow or run hose water through the coolant side of the oil cooler. If you can't, it's blocked, which happens if rad sealer has been used, or the cooling system has been neglected in the past.

backinblack · Feb 14, 2022

Never tried but maybe the oil is too thick for blowing by mouth, have you tried using a compressor like a tyre inflator?

T1tch65 · Feb 14, 2022

backinblack said:
Never tried but maybe the oil is too thick for blowing by mouth, have you tried using a compressor like a tyre inflator?

I m referring to the coolant side. Did oil side using a drill pump.

T1tch65 · Feb 14, 2022

Nodge68 said:
You should be able to blow or run hose water through the coolant side of the oil cooler. If you can't, it's blocked, which happens if rad sealer has been used, or the cooling system has been neglected in the past.

Thanks Nodge think it’s time for a new one before something get damaged.

backinblack · Feb 14, 2022

T1tch65 said:
I m referring to the coolant side. Did oil side using a drill pump.

My bad, reading isn't my strong point should have gone to specsavers

tomcat59alan · Feb 15, 2022

T1tch65 said:
Correct
Guess it is blocked then.

Which is why we need to know the vehicle details, not one standard fitted.

T1tch65 · Feb 15, 2022

tomcat59alan said:
Which is why we need to know the vehicle details, not one standard fitted.

L322 03 plate. Hse BMW 3.0 diesel

tomcat59alan · Feb 15, 2022

T1tch65 said:
L322 03 plate. Hse BMW 3.0 diesel

Not owning a 322 I would suggest you take the advice given and change the cooler.

stuu · Feb 15, 2022

Td6 gearbox oil coolers have a built in thermostat and don't let coolant through until the box has warmed up,

T1tch65 · Feb 15, 2022

stustrong said:
Td6 gearbox oil coolers have a built in thermostat and don't let coolant through until the box has warmed up,

Hi Stu
First I’ve heard that one?

backinblack · Feb 15, 2022

stustrong said:
Td6 gearbox oil coolers have a built in thermostat and don't let coolant through until the box has warmed up,

Just proves you never stop learning

From Rave

The fluid cooler has a thermostatic valve which is opened by transmission fluid temperature. The thermostatic valve
is opened at a transmission fluid temperature of between 91 and 95°C (196 and 203°F) and allows engine coolant to
flow through the fluid cooler.

stuu · Feb 15, 2022

T1tch65 said:
Hi Stu
First I’ve heard that one?

Yup i put a box in mine last year and did the cooler and kept the baseplate with the valve in it but yeh coolant wont circulate until the box is upto temperature,

stuu · Feb 15, 2022

Unless its going into cooling strategy where it will redline every gear then change even on part throttle, why are you investigating the cooler btw.?

Gearbox oil cooler

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