The Autonerdz Community Forums - Free cooling system training

Anthony Lamb Super Nerd Picogroup Offline Posts: 1,202 Brisbane Queensland Australia Gender:	Free cooling system training Jun 5^th, 2015 at 11:18pm Hello everyone, Watched this link on cooling systems a few weeks back, it is a long one but some a fair amount of interesting stuff I took out of it that I never really thought about before. https://www.youtube.com/watch?v=R5BqwXWu-aM
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Matt H

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Re: Free cooling system training
Reply #1 - Jun 7^th, 2015 at 3:17pm

That was pretty good. A lot of useful info in there.

I wonder why he doesn't want to use Toyota SLLC in 2003 and older cars that called for LLC... He says he thinks it may not be backward compatible? I'll have to talk to Toyota about this, as I use the Toyota SLLC in all Toyota's.

I eliminated all of my oil and coolant problems by limiting brands I work on (Toyota, Nissan, and Honda being the main three), and then using the OEM fluids for those cars. No having to sift through BS lies that's all over the aftermarket stuff.

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Spence LSD Guide Picogroup Offline Posts: 8,025 Jeffersonville Pennsylvania USA Gender:	Re: Free cooling system training Reply #2 - Jun 7^th, 2015 at 4:26pm Thanks for the link and the thought Anthony.
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brandonb Super Nerd Picogroup Offline Posts: 1,414 arizona Arizona USA	Re: Free cooling system training Reply #3 - Jun 7^th, 2015 at 8:05pm thanks, a good one to show management
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Anthony Lamb

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Re: Free cooling system training
Reply #4 - Jun 8^th, 2015 at 3:35am

Matt H wrote on Jun 7^th, 2015 at 3:17pm:

I wonder why he doesn't want to use Toyota SLLC in 2003 and older cars that called for LLC... He says he thinks it may not be backward compatible? I'll have to talk to Toyota about this, as I use the Toyota SLLC in all Toyota's.

From all the Toyota info I've read they are interchangeable.

Personally though I would use SLLC in a older system as it is already premixed.

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JNelson Super Nerd Picogroup Offline I'm an Autonerd Posts: 684 Livermore, CA California USA Gender:	Re: Free cooling system training Reply #5 - Jun 8^th, 2015 at 1:31pm they are interchangeable. the sllc is just premixed red llc. I was working at Lexus, we ran out of pink one day. The parts department started passing out red and distilled water.
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Matt H

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Re: Free cooling system training
Reply #6 - Jun 8^th, 2015 at 3:22pm

Anthony Lamb wrote on Jun 8^th, 2015 at 3:35am:

From all the Toyota info I've read they are interchangeable.

Personally though I would use SLLC in a older system as it is already premixed.

The SLLC we get here comes in small bags of 2L that are premixed, and 18L cans that are concentrate, and require mixing... Huh

About $85US for 18L

Anyway, talked to my kid, and he said they're taught that SLLC is backward compatible, but putting it in a car designed for LLC doesn't give you the SLLC life benefit. You must change it at 3 years, or the LLC interval, so it's a waste of money, as it's more expensive than LLC.

SLLC has no nitrates vs. LLC which does. That seems to be the only difference, and not sure how that affects anything in the engine, other than the life of the coolant.

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haydenw

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Re: Free cooling system training
Reply #7 - Jun 9^th, 2015 at 12:42am

Matt H wrote on Jun 8^th, 2015 at 3:22pm:

Anthony Lamb wrote on Jun 8^th, 2015 at 3:35am:

From all the Toyota info I've read they are interchangeable.

Personally though I would use SLLC in a older system as it is already premixed.

The SLLC we get here comes in small bags of 2L that are premixed, and 18L cans that are concentrate, and require mixing... Huh

About $85US for 18L

Anyway, talked to my kid, and he said they're taught that SLLC is backward compatible, but putting it in a car designed for LLC doesn't give you the SLLC life benefit. You must change it at 3 years, or the LLC interval, so it's a waste of money, as it's more expensive than LLC.

SLLC has no nitrates vs. LLC which does. That seems to be the only difference, and not sure how that affects anything in the engine, other than the life of the coolant.

That's about what I thought

In NZ service schedule they list the SLLC to be 150,000kms/10 year replacement and the LLC we replaced on a 2 yearly schedule. As far as I was aware you could put the SLLC in with LLC based cooling system, but not LLC in the SLLC cooling system even with distilled water. I think the 150k service schedule with the SLLC should of been a no-no and its showed now with many 1KD, 2AZ, 1NZ water pumps failing prematurely (in comparison to other engines). Well that's in NZ anyway.

Thanks for the link Anthony I learned a lot ! Shocked

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Anthony Lamb

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Re: Free cooling system training
Reply #8 - Jun 9^th, 2015 at 2:24am

Matt H wrote on Jun 8^th, 2015 at 3:22pm:

SLLC has no nitrates vs. LLC which does. That seems to be the only difference, and not sure how that affects anything in the engine, other than the life of the coolant.

To be honest I never really put a lot of thought into it.

haydenw wrote on Jun 9^th, 2015 at 12:42am:

In NZ service schedule they list the SLLC to be 150,000kms/10 year replacement and the LLC we replaced on a 2 yearly schedule.

I think it is 160,000km for the first and then every 80,000 after that
, but that is way too long.

With the example of the debris in the video, I am wondering is this why Toyota had such big issues when they went over to SLLC?

haydenw wrote on Jun 9^th, 2015 at 12:42am:

Thanks for the link Anthony I learned a lot !

That is ok, I'm going to sit down and re watch it and take some notes.

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