Here's Why You Should Flush Your Coolant Regularly!!

Engine coolant becomes corrosive with time and as you drive. If you don't flush it out on a regular basis it will eat your engine from the inside out. I was not good about doing this on my truck. :(

[johnnie]

I was on the fence to change my coolant, but you just pushed me off the fence. I'm doing this procedure this week.
Thanks for your honesty in your confession.

[chucknSC]

I think someone changed to the wrong coolant for that alloy. Can you confirm that that was actual Toyota coolant? All my toyotas use the red/pink coolants. It's a Pentofrost formula for aisian cars. Not green.

[howabouthetruth]

This proves how using the wrong coolant type can corrode an aluminum engine made of certain alloys. The old coolant used in this engine was clearly the green type ( can't recall the correct name/identification at the moment ). Using the correct coolant doesn't allow this corrosion to happen in the first place when changed as recommended. The coolant needed for this engine has a red/pink color, NOT green. Bought my 2000 Tacoma 4x4 with 3RZ-FE motor brand new in 2000. 20 yrs later & over 346, 000 miles, it still runs great. It doesn't even burn any oil.

[darkdrewmo]

You need the red Toyota coolant. That looks like the green shit from the auto parts store that eats away at your engine.

[WApnj]

Already mentioned... The wrong coolant causes that type of damage... Erosion from the silicates...

[geraldwilcox]

I have never seen that on my GM cars and trucks. If you you really like the truck, fix it the best you can and run it. It's cheaper than buying much newer one. I have never went out of my way to change the coolant in any of them. Have thought about looking a toyota till I see your problem, now no way, will stick with my old gm products. Gerald

[bryangaleas]

Damn! I could feel your pain watching this video. Thanks for sharing
Learned something new today

[howabouthetruth]

WRONG COOLANT WAS USED. You can tell by the green color. The correct coolant MUST be used, and it has a pink/reddish color.

[arthurrodesiler]

Try and find a cheap head or junk the whole thing or part it out. If the frame was rusted out and been repaired won’t be long for other things. If you have over 200, 000 miles on it thats about all it has in it my guess.

[gregh]

why is it on my volkswagen it has "lifetime coolant" and i've never had head erosion problems with 257k miles? I took the engine apart and all the coolant passages are very nice and corrosion free. I'm starting to think the coolant aka prestone green stuff isn't protecting it like it should. There are people who swear by radiator caps that have an anode attached reduce corrosion.

[Duraputer]

How the heck does a head blow but not a head gasket 😂

[DoctorColg]

I've never changed or flushed my coolant system... ever. I'm 60. I'm trying to justify buying a vacuum fill system ($100) vs a plastic burp funnel to ($40) to bleed the system after i replace a thermostat. After this video, I'll get the tool and flush the wifey's system as well as my Rubicon.

[paultoti]

Common 3RZ problem.. Seen 2 blocks corroded on deck surface of #1 cylinder, R/H side about 1 o'clock position.

[elgransr]

Maybe not flush but change it every 3 years. What do you think. Not coolant said they last 10 or more years. Yes in a laboratory not in real life

[alloycrow]

I'm glad you kept going the homade route. I love these types of repairs. I hope you succeed. Suscribed.

[hopeless]

Make sure you're not using straight concentrate coolants this is the outcome

[arthurrodesiler]

You need air in the system at some point to start the corrosion process I would think. Aluminum heads don’t hold up like cast iron heads do.

[Jeanie]

run a coolant like dexron GM COOLANT no water in it and change it every 100, 000 miles--regular unleaded fuel no ethanal I think with a rebuilt head your little truck still has a lot of miles to go : )

[jtcustomknives]

Ouch. I don’t think the coolant has ever been changed in my 1970 Chevy C10. But it does not have cast aluminum heads,

[turboimport]

Funny I just tore off the head on my 96 Tacoma because I was getting oil in the antifreeze, It has over 300k miles still ran great, but was getting bubbles in the overflow tank. It never ran hot or overheated just let go from old age, the headgasket material itself was disintegrating because its composite not steel. The coolant ports were getting clogged from the head gasket material. I'm gonna fix mine and drive it a bit longer then swap the engine to something else.