Getting oily sludge out of cooling system?

[Henery]

We are going to try a new heat exchanger on our Merlo 40.7 engine. The cooling system must have a load of gunk and sludge in it. One suggestion was to put washing powder in with water to move the oil ?
any thoughts welcome.

 

[Vincent]

Washing powder and when it breaks down the oil flush out and repeat until clean. Have done this many times and it the best way I have found to do it.

 

[Flat 10]

Dishwasher tablets?

 

[daveydiesel1]

We would of used soda crystals years ago to clean out a radiator. It worked well

 

[Mur Huwcun]

Dishwasher tablets?

We’ve had success with dishwasher tabs but don’t leave it in too long as it can attack the aluminium in the cooling components. Pop one or two in and run up to temp then flush out and repeat

 

[ACEngineering]

We are going to try a new heat exchanger on our Merlo 40.7 engine. The cooling system must have a load of gunk and sludge in it. One suggestion was to put washing powder in with water to move the oil ?
any thoughts welcome.

I would use Forte Bio degreaser. its great stuff and works very quickly and made for the job. Probably get it a bit cheaper if you shop around for it in the motor trade.

Pardon our interruption...

 

[Tractor Tim]

There was a thread on this a few years ago. We had a heat exchanger go flushed it out repeatedly then used washing powder can't remember but it is better to use either bio or non bio some one will tell us I'm sure. I used the steam cleaner took the lanse off and put it on the top of the rad to put hot water in with the engine running and drain cock open keep it going til it's clean took about 2 hours

 

[mo!]

I recently cleaned the cooling system on my Manitou. Two cycles with dishwasher tabs and it was still mucky, then I bought some proper rad flush and it came up sparkling.

5 quid for a bottle but it sorted out the overheating problem.