FJ Cruisers of Northern California

Flushing the Coolant?

So while I had my front skid plate removed i noticed a little nozzle at the bottom of the radiator...is changing the coolant as easy as turning on that nozzle?

If so do you need to help it out any...ie pressurize it with air, or flush it out with a garden hose?

▶ Reply to This

Replies to This Discussion

Permalink Reply by Sonof40 on September 26, 2010 at 10:43am

Yep, that easy. I haven't done a complete drain yet but I will use the hose method when I do.
Sorry I missed you at High Sierra.

▶ Reply

Permalink Reply by Bz on October 28, 2010 at 11:33pm

you may have to warm up the FJ for the thermostat to open up so the block will drain

▶ Reply

Permalink Reply by Boss73 on October 29, 2010 at 6:35am

Yes you can drain the coolent from the radiator but you will not get everything out of the block.. Only way to do that is flush it out.. Now when I have done this on older cars I would normally handle this when I changed out a water pump. With the water pump gone its very easy to flush ou tthe block.

This most likely will not be nessary in our FJ since they are stil less than 5 years old.. (but mine is getting close)..

▶ Reply

Permalink Reply by Bz on October 29, 2010 at 10:30pm

Boss FTW!!!!!!!!!!!!!!

▶ Reply

Permalink Reply by Boss73 on October 30, 2010 at 1:12am

F__K the world???

▶ Reply

Permalink Reply by Bz on February 5, 2011 at 6:33pm

For the WIN!

▶ Reply

Permalink Reply by Boss73 on February 6, 2011 at 7:48am

OIC

▶ Reply

Permalink Reply by cypilk on October 30, 2010 at 9:54am

Yep, exactly what boss said. Just turn the twist and the coolant will drain out. You won't get all of the coolant because there is some in the engine still. Oh, and I recommend that you do not use water from the hose. Just drain everything and fill it back up from the hole on top of the radiator. It should bubble up as you fill it so pour slowly and continue until it is full. When you are all done, make sure your coolant level is normal (I like to start the engine for a minute before filling to "F").

Good luck!