toyospearo

Yes I did an extensive search at least 9 pages deep and couldn't find anything on what is the best coolant for the 22RE. I am about to flush my system and I want to replace it with a quality coolant.

pruney81

If you want the BEST coolant for our 22re's I would get the Toyota red from the dealer.
That said, I just use the Prestone green from Walmart and have never had any problems with it in any of my 6 Toyota trucks that I've owned over the years.

toyospearo

Its been a while. Is it one gallon for the 22re and top it off with water??

pruney81

If you're going to just drain and fill it then just pick up one gallon and fill the rest with distilled water. As to a complete flush I'm not sure.

toyospearo

I am going to flush the system and do a mild radiator flush. I have been told distilled water is not necessary for flushing. However, due to the electrolysis issue I think otherwise.

Teuf

Water, then global, or Red toyota coolant.

sb5walker

A fair amount of water remains in the heater core and block after flushing and draining. Since the minerals in tap water will react harmfully with the anti-corrosion chemistry of the coolant, it is a good idea to make the last flush or two with distilled water, and definitely use only distilled to mix with the new coolant. Don't forget to flush the plastic overflow tank too.

Peak Global antifreeze is an organic acid technology coolant (OAT) which should never be used in a vehicle with copper/brass/lead radiator & heater core, since the OAT coolant corrodes the lead solder. The same goes for the newer HOAT coolants (hybrid organic acid technology) like G-05 and Toyota Pink - they also corrode lead solder and, like the OATs, should only be used in vehicles with aluminum rads & heater cores.

That leaves two coolants: Toyota Red and the old-style Prestone Green. Of those, I think Toyota Red is a much better choice. This post explains why, gives an overview of the different coolant types, and gives cooling system capacities for trucks & 4runners & lists how much coolant to use to make a 50/50 mixture:

https://www.yotatech.com/forums/f116...nt-faq-192781/

toyospearo

That link is a work of art!!
In the search I did it never came up. That was exactly what I was looking for!!
Thank you!

RMA

Today I saw a big leak under my 2wd 22re truck during work, what I found was 2 freeze plugs leaking . I had to fill her up 2 times before I got home.

I took the freeze plugs out and just ordered a set and will install them when they get here .
Here is what they look like ,the motor was rebuilt about a year ago, I filled up with regular green preston and regular water . About 60/40 and the plugs are steel not brass .will be installing brass ones . so im going to try the toyota red and the distilled water.

peow130

The green stuff tastes better.
That is all.

sb5walker

Glad it helps; thanks for the feedback.

toyospearo

You're welcome.
I have one more question.. How do you flush out the system with distilled water? I mean my water that comes from the hose is not distilled. How can I circulate distilled water through the system???

sb5walker

Quickest way to do a distilled flush is to drain the old coolant, pull out the thermostat & reattach the housing, then fill with distilled & run for a while, wait for engine to cool enough so that you can hold hand against the motor without burning, drain & repeat one or two times. Be sure to move heater lever all the way to hot to flush the heater core. The need for cooling time makes the process take several hours.

Or you can get a flushing kit (they're like 4 bucks) and flush the system with the hose (remove stat & disconnect lower rad hose), then do one or two distilled fills as described above. The hose gives a better flush, just don't use full blast but only moderate pressure.

And of course replace the stat with a new one from toyota. Many folks have better luck with a 180 degree 22rt-e stat instead of the 190 deg 22re one - less chance of pinging, less stress on head gasket.

rangerruck

you can buy plenty of distilled water in gallons from your local grocery store, also in those vending machines, they should have distilled water, it is so much better, I run it in all my cars, and my radiators are clean babies.
never new about the fluid though, that is a great link and should be a sticky;
never used the yota red, but will have to start now!!!

So you mean to tell me, according to that link, my 4x4 22re engine, only has about 2.5 gallons of liquid total, in the cooling system? that is tiny, I though it would be way more than that...

sb5walker

Well that's what the fsm says, but I have the 3vze so I don't know for sure, haha. The veezy specs seem to be right; at least when I add coolant in the amount of 50% of the supposed capacity, and then check it with a hydrometer, the freeze point does come out near -34.

874runnersr5

try that pressureless coolant stuff.. that stuff looks interesting

abecedarian

No, you didn't search. It's in the owner's manual.
Flush and fill accordingly and you'll be fine.

toyospearo

Yes, I did search the FSM. However, its not near as much fun as creating a thread.
Thank you for your resounding insight!

abecedarian

It's not "resounding" but rather "anticlimactic"
The 22re came about before the "red" stuff. But even then, basic "green" antifreeze worked well.
If you're worried about electrolysis, drop some zinc in there... you're fine.
New engine- flush with 5% antifreeze / 95% tap water, then drain and fill with your preferred ratio of antifreeze / distilled...
the antifreeze corrosion inhibitors in that 5% antifreeze will neutralize the 95% tap water.


meh.

...?

toyospearo

Now we are havin a conversation!!!!