Radiator replacement...to flush or not to flush?

[Nevada_545]

@dallas_res_173764

two of which included a coolant flush and two of which did not; for the shops that didn’t include it, they both basically said you don’t need it because you lose 80% of the coolant with the radiator replacement and the rest is in the bottom of the engine block.

Charging for a “flush” is a way of padding the labor bill, the tech receives one hour of labor for this.

My co-workers often charge for a cooling system flush during a cooling system repair however these vehicles are drain and fill, I have not seen anyone touch the cooling system flush machine in the last 10 years.

Using the flush machine is a less effective method of replacing the coolant, the water pump mixes the old coolant with new during the flush process.

BTW you won’t find rust in an aluminum engine.