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Topic Summary

Posted by: SteveKfl
« on: October 06, 2021, 02:53:33 PM »

Don't forget the GM "Dexron" orange for aluminum components.  Here are some other colors too...
 
Organic Acid Technologies
During the 1990s, cooling system components shifted to more aluminum and nylon, so coolant was reformulated to protect these new materials. This type of coolant uses organic acids to prevent corrosion and is usually orange in color. A third type of coolant utilizes Hybrid Organic Acid Technology that combines the benefits of IAT and OAT into one product. HOAT coolants are often yellow or orange but may also be blue, red or pink. Both of these types are long-life coolants and may last up to five years or 150,000 miles before they need to be replaced.
 
Previous paragraph taken from an "interesting read", linked here...
https://itstillruns.com/difference-between-dexcool-coolant-regular-coolant-12196331.html
Posted by: Chuck W.
« on: October 06, 2021, 01:44:08 PM »

My 3B had a really nasty cooling system. I had the radiator out for re-coring and before I reinstalled it, I use a product called Therm-O-Cure Coolant System Rust Remover, by Evap-O-Rust. With the radiator out and the water pump off, I capped all the openings and filled the engine water jacket with the mixture and let it sit overnight. Flushed with fresh water the next day and was surprised how much crap came out of the block. I flushed it again with the same product after the radiator was back in and before I put anti-freeze in and got another load of crap out. Distilled water and 50/50 Prestone "green" antifreeze and no problems since.
https://www.evapo-rust.com/thermocure/
Posted by: Rus Curtis
« on: October 06, 2021, 01:14:02 PM »

Okay, okay..... green/yellow whichever you see with your eyeballs, I'm referring to color.

Be aware that some antifreeze labeled "Green" implies it's safe for the environment.  I think that's what this is.  Opening up on NAPA it actually says "Biodegradable"

There is also a variation available that states safe for animals. 

I didn't know that in some states antifreeze is considered hazardous and even requires paperwork to show proper disposal. 

You get to choose which variation you prefer but still treat it as poison so you don't have issues with the neighbors' cat or unexplainable brown spots in the lawn.

Once I learned, I always took it in to a shop that could recycle it.

Added:  Almost forgot!  A thread from old forum where Oldtime lists zerks:
https://www.tapatalk.com/groups/cj3b_bulletin_board/viewtopic.php?p=38834#p38834

Posted by: Rus Curtis
« on: October 06, 2021, 01:12:40 PM »

Okay, okay..... green/yellow whichever you see with your eyeballs, I'm referring to color.

Be aware that some antifreeze labeled "Green" implies it's safe for the environment.  I think that's what this is.  Opening up on NAPA it actually says "Biodegradable"

There is also a variation available that states safe for animals. 

I didn't know that in some states antifreeze is considered hazardous and even requires paperwork to show proper disposal. 

You get to choose which variation you choose but still treat it as poison so you don't have issues with the neighbors' cat or explainable brown spots in the lawn.

Once I learned, I always took it in to a shop that could recycle it.
Posted by: Marla.the.V35
« on: October 06, 2021, 12:43:34 PM »

These discussions are the best. Great info, thanks all! This one then (attached)?

I know the coolant/antifreeze in the jeep now is green. I'll have to do some reading on the differences in colors. Ya think they'd make this easier (had an easier time sourcing lubes and oils!). I also saw "yellow" antifreeze somewhere lol. Oy...

I'm prepared for two year intervals for antifreeze. Hell, I'm already set on oil/filter changes every 3mo/3000miles, and greasing all the zerks (40 of 'em?) every 6mo. It's a Willys, after all  ;)

Posted by: Rus Curtis
« on: October 06, 2021, 11:09:42 AM »

Mark points out that modern coolant is compatible with modern engines.  I read the description of your NAPA example and it also states compatible with all fluids.  To me, that implies it works whether you have green or red antifreeze (I really don't know of many more types of fluids that exist in a radiator). 

To me, that is an upgrade although I'm still thinking old-school and have been purchasing the plain jane Prestone green aka "plain" antifreeze.  I seem to recall that back then a service cycle was like 2 years before needing to flush.  I presume this was for the additives in the coolant that protect against corrosion, rust, seals drying out, etc. 

I once swapped over to the red antifreeze (after an extensive, thorough flush) and didn't notice anything different (for a '95 Cherokee).  I wanted to cash in on the longer service interval which may have been something like 5 years.  What I ran into was at the time, the incompatibility of the two and didn't want to double up on stocking both.  So, I did another long, thorough flush and went back to the "plain" green antifreeze and just stuck with it.

I didn't see anything in the description that indicates this "all compatible" would be a wrong choice, I'm mostly pointing out I need to go shopping more often and get caught up on what's changing, e.g. the Cherokee was replaced with a 4Runner and it has 10K mile oil change intervals! 

What I wonder is if you use a modern product that says it will last 100K miles do you leave it in or follow the SM intervals?  If you check the antifreeze often, you may feel comfortable with leaving it in longer.
Posted by: Mark W.
« on: October 06, 2021, 08:03:19 AM »

NAPA sells a universal Antifreeze that works with all metals used in a coolng system. Its not expensive and available at any NAPA. Mix 50/50 with distilled water if your tap water is crappy. I did thousands of car care services as a kid working for Chevron USA and we always just used Tap water. Batteries back in the day sure we used distilled.
Posted by: Marla.the.V35
« on: October 06, 2021, 12:03:15 AM »

Oh, plain would be fine! I can assure you, I have no idea what I'm doing lol. I wasn't aware there were so many different types of antifreeze...
When you say plain, what do you mean? What makes the one I found fancy?
I will for sure pick it up at Walmart and enjoy a little savings, and I appreciate the tip. I did read through the previous post and saw the note about using distilled water. I'll be sure to pick some of that up too. Thanks!
Posted by: Rus Curtis
« on: October 05, 2021, 11:34:23 PM »

JON,
It looks ok.  Funny how I've been getting plain antifreeze for years but never see this fancy stuff. 

BTW, I think you can buy at Walmart for about half that price. 

Yeah, 2 gals of antifreeze but also 2 gals of water ( I like distilled).  1.5 gals of antifreeze into the flushed/drained radiator/block then top off with water (will also be about 1.5 gals.).  Now you have half of each.  Combine and you have a 50/50 jug ready for top offs.
Posted by: Marla.the.V35
« on: October 05, 2021, 05:41:29 PM »

Is this one ok to use as well?

https://www.napaonline.com/en/p/PAFAF2000?ref=Mg==
 

I read that the L134 cooling system takes 11 quarts. 4 qts to a gallon at 50/50 mix means I need two gallons (I'm terrible at math)?
Posted by: Rus Curtis
« on: August 07, 2019, 09:46:01 AM »

Never seen that brand before.  Looks good.  You should have a bit left over after mixing. 

My technique is to poor the remaining water into the leftover half gal antifreeze to have top-off 50/50 ready to go (just mark it so you know).
Posted by: MikeP
« on: August 07, 2019, 08:22:43 AM »

well i bought 2 jugs of this stuff and it should be the right stuff and the right amount
Posted by: Rus Curtis
« on: July 22, 2019, 04:10:27 PM »

They make commercial flush but I've heard of some using vinegar - same principal as cleaning a coffee pot.  Ingenious.

If I clean, I may do that.
Posted by: MikeP
« on: July 22, 2019, 02:23:30 PM »

all right so green stuff and distilled water and im pretty sure the system is gonna need a good flush or 2 any idea on a good product to add for the flushings so i can clean the bad stuff out
Posted by: Rus Curtis
« on: July 22, 2019, 10:23:18 AM »

I use the green type.  I don't use the red.  I also strongly suggest distilled water as it minimizes mineral deposits from electrolysis.

I prefer Prestone as it hasn't caused any problems for me and the additives will help.