w124/what options for cooling improvement

[dogan124]

I have a nice w124 300 td (wagon non-turbo diesel) with AC and AT and it has the factory fitted radiator.

I want to know in what ways I can improve the cooling for the engine, engine oil and AT oil.

Is there a more efficient radiator in w124 family ?(like 300TE ?)

May I apply some small radiators for cooling oils?

I think the turbo diesels have a cooling system for engine oil. Is it possible to convert mine to that ?

I have just swapped my caravan for a larger one and I beleive the previous one was just on the edge for cooling concernes.

Thanks for any contribution...

Dogan

 

[PJH]

On my '93 280e the oil cooler is a heat exchanger located by No 5 cylinder. It is not a radiator as such.
Don't know about diesels though.

 

[atikovi]

Add a bottle of Redline Water Wetter to the coolant. I've used it in many cars and it makes a noticeable difference to where the temperature gauge reads.

 

[PJH]

Diesel Water Wetter

 

[guydewdney]

i found that when i had a new a/c radiator fitted (due to it leaking) the cooling improved significvantly.

Try removing the radiator and cleaning it, maybe with a low pressure jet wash? clear out any debris (leaves etc) between the two - you might be amazed at what collects in there.

Check with the patented 'carrot test' (do a search) that the fan is coupled properly - I thought the one on the GF's sprinter was - until a merc technician just went - nah, and stopped it with his hand

make sure the ratio of anti freeze is correct.

flush the whole system - just plumb in a hose pipe on full blast through the engine for half an hour... (ie disconnect the top hose to the radiator, disconnect lower hose, and bodge in a hose pipe if you can (wrap loads of tape round a hose pipe or similar. pump water in from bottom so that water flow around ALL of the engine, not just the easiest flow path))

HTH

Guy

 

[Dieselman]

Check with the patented 'carrot test' (do a search) that the fan is coupled properly - I thought the one on the GF's sprinter was - until a merc technician just went - nah, and stopped it with his hand

He lost three fingers but eventually the fan stopped.

 

[Dieselman]

As Guy says perform a system flush and clean the rad out externally.

A petrol radiator may waste more heat as it is designed to do that anyway.

You could either buy or make oil coolers to plumb into the oil circuit.

 

[dogan124]

Thanks for all the repplies.


I have already had the radiator cleaned by some kind of skewer and got a considerable improvement. I do not expect more from it.

I will check for the additives.

AT oil coolining seems an easier job, (cut the pipe coming from the AT unit for cooing. Then implace a small radiator around in front of the car. Apply high quality labor though. Any suggestion?)

Engine oil cooling however is more difficult I expect. Does any body have more detail about fitting cooling systems for oil ? That of turbo diesel especially?

Regards.

Dogan