Are flushes necessary or beneficial?

I have never done a forum thing before.
Are different system flushes necessary/ beneficial or a waste of time and money?

 

Depends .
Welcome . You’ll get all sorts of replies.

 

Yes

 

Necessary? - No.

Beneficial? - Yes.

 

If it’s yellow let it mellow, if it’s brown flush it down

 

wow! guess i better be pacific. what about flushing transmission (on my truck)

 

Just do a drain and fill

I did a flush recently but I had more miles miles

 

I would. They have been known to be not properly filled from the get go.
There are threads on this here.

 

Welcome to TW! What fluid/system are you talking about specifically?

 

i always change my fluids, especially the engine oil and transmission fluid. 2 most crucial. coolant, power steering, and brake i do every few years.

 

New vs old

 

Depends upon how the flush is done. Cheap shops do what is called a reverse flush. Pulling the crud trapped in the filter into the tranny, and valvebody. Done properly a flush is good. Just dont let them suck the old fluid out through the fill or dipstick tube. Cooling system flush yes it is good, cheaper to do it your self.