Rad / cooling flush for cars (no plumbers required)

My local garage has said the heater matrix is blocked in my Sprinter, Its a dash out job to replace I think. Anyone recommend a decent rad flush type thing ?

Ta

 

Dunno I only do plumbing

 

In my experience ,you could wash all the crap somewhere else ,be prepared for the clearing of rusty bits.

Did it ever leak .

 

No leaks, and to be honest it hasnt done a lot for a sprinter, 95k miles 2014 plate, I am not sure of the diagnosis to be honest but .....

 

Check the heater control valve and whether the flaps are moving directing the heat correctly

 

I used this recently on an old digger engine along with a lot of flushing, looks to have done the job, coolant now looks like it should. It had been some brown rust soup

 

Would it be worth sticking some radiator flush in and running it for a while, then draining and refilling with a good quality antifreeze.
That should sort the radiator... no idea what a "heater " is .... we drive VW campers !