Gearbox oil cooler

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?

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?

Click to expand...

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

tomcat59alan said:

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

Click to expand...

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

Why would you think it was blocked?

cos he can't blow through it silly

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.

backinblack said:

cos he can't blow through it silly

Click to expand...

backinblack said:

cos he can't blow through it silly

Click to expand...

Correct
Guess it is blocked then.

T1tch65 said:

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

Click to expand...

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.

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

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?

Click to expand...

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

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.

Click to expand...

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

T1tch65 said:

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

Click to expand...

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

T1tch65 said:

Correct
Guess it is blocked then.

Click to expand...

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

tomcat59alan said:

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

Click to expand...

L322 03 plate. Hse BMW 3.0 diesel

T1tch65 said:

L322 03 plate. Hse BMW 3.0 diesel

Click to expand...

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

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

stustrong said:

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

Click to expand...

Hi Stu
First I’ve heard that one?

stustrong said:

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

Click to expand...

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.

T1tch65 said:

Hi Stu
First I’ve heard that one?

Click to expand...

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,

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.?