AC System Slow Leak (1 Viewer)

[flintknapper]

w/out any factual research data to backup Nylog's marketing material you have produced thus far -- used to help sell their product. Of which their are a plethora of similar products. Of by what you are saying people may as well add all those as well while they're at it: Sealers/leak blockers/UV Dyes the whole 9 yards. Fair enough you go ahead and use it, I just feel like you should not be recommending it as the be all and end all. Orings do the job fine

^^^^^

Very much a false claim and a dishonest assertion. The history of my posts here will reveal that I discourage the use of 'system' additives, the lone exception *in dire cases* being the use of dyes IF the person intends to evacuate the system after finding the leak and flush it.

You've gone out of your way to twist and distort....in order to make your case. I don't think that speaks very highly of your character.

I understand you think the product 'unnecessary', if not potentially harmful. And there is nothing that can be said to help you realize the possible benefits. This is plain from the drama and hyperbole you've injected....but I suspect agitation is your main goal anyway.

I stand by what I have posted concerning A/C systems and repair..... both now and in the past. I have always done so in good faith and will let others judge my competence accordingly.

https://www.refrigtech.com/wp-content/uploads/Product-Data-Sheet-NB.pdf

REVIEW: Nylog Gasket and Thread Sealant - https://hvac-talk.com/vbb/threads/1279551-REVIEW-Nylog-Gasket-and-Thread-Sealant

 

[Biga27110]

^^^^^

Very much a false claim and a dishonest assertion. The history of my posts here will reveal that I discourage the use of 'system' additives, the lone exception *in dire cases* being the use of dyes IF the person intends to evacuate the system after finding the leak and flush it.

You've gone out of your way to twist and distort....in order to make your case. I don't think that speaks very highly of your character.

I understand you think the product 'unnecessary', if not potentially harmful. And there is nothing that can be said to help you realize the possible benefits. This is plain from the drama and hyperbole you've injected....but I suspect agitation is your main goal anyway.

I stand by what I have posted concerning A/C systems and repair..... both now and in the past. I have always done so in good faith and will let others judge my competence accordingly.

https://www.refrigtech.com/wp-content/uploads/Product-Data-Sheet-NB.pdf

REVIEW: Nylog Gasket and Thread Sealant - https://hvac-talk.com/vbb/threads/1279551-REVIEW-Nylog-Gasket-and-Thread-Sealant

You don't need to defend yourself. Your reputation stands for itself. We all have used your knowledge to revive our trucks. You are an asset to these forums and do not stop posting your wisdom and experience.

 

[highkick05]

Highkick05, thankfully those clips came off with the bobbypin / paperclip tool and clicked back on for me.

What I am wondering is long term how to reduce the wear of the grit in the rubber mounting sleeves in key points down the length of the rear line. Almost every one I opened up had traces of either pinhole leaks, or wear that was well on its way to creating pinhole leaks. Reading comments from others, that is why I decided to replace both of my high pressure lines running underneath the body, each of those points is suspect and learning from others, I could spend a long time chasing down individual leaks. I can only assume the grit that gathers in them acts as an abrasive and wears through the lines.

What can we do to reduce that wear? Or just accept it and replace the lines every 10-20 years?

One shop posted their fix online where they put a thin layer of anti-seize and then wrapped a short piece of electrical tape to add a 'wear layer' to the the line. Curious if anyone else has taken similar steps.

FYI - I ordered my rear high pressure lines (88726-60630 and 88726-60650) along with several of the support brackets that were in the worst shape today. The dealer had higher prices, but compared to the $100+ shipping online for these long pieces, I actually ended up going through the dealer for price and turnaround time. Cruiserparts, McGeorge & others do carry them as well.

View attachment 2742039

Interesting , I had a feeling you were talking about something back there. I didn't have rear A/C in mine. They must be pretty hard plastic then by the looks.
Not hard to imagine they would start wearing into the pipe. What do they use under the bonnet? Something better? those lines seem pretty faultless.
All I can think of is perhaps some fine hole foam layered inside the clamp. Or yeah leave them off and wrap it several times around with some really good quality tape, after a good clean of the underlying surface first. leaving the bracket on obviously. You think the bracket alone would hold it there.

 

[highkick05]

I understand you think the product 'unnecessary', if not potentially harmful.

Yes, that is what I think. I would not use it personally, DENSO doesn't recommend it. Neither would Toyota, and neither did the dealer with over 40 years experience in the industry (hyperbole and drama apparently). I have not twisted or distorted any of that. I have merely argued against its use, of which you have defended exhaustively, even by insinuating I'm a drama queen.

 

[highkick05]

You don't need to defend yourself. Your reputation stands for itself. We all have used your knowledge to revive our trucks. You are an asset to these forums and do not stop posting your wisdom and experience.

Yes, he doesn't need to defend himself, but feels the need to because he keeps selling this as the best thing since sliced bread for sealing orings and connections. Feel free to tell people its what you use but members should just know its 100% unnecessary. Orings lubed with the specified ND-8 oil is all you need for a 100% pressure tested vacuum seal.

 

[flintknapper]

Yes, he doesn't need to defend himself, but feels the need to because he keeps selling this as the best thing since sliced bread for sealing orings and connections.

More of the hyperbole you deny. It really lends nothing to your argument.

Feel free to tell people its what you use but members should just know its 100% unnecessary. Orings lubed with the specified ND-8 oil is all you need for a 100% pressure tested vacuum seal.

Here is the bottom line:

1. Orings lubed in ND-8 or PAG46 will suffice to install the Oring and join parts. However, if not quickly assembled you risk corrosion and deterioration of the Oring/joint in the future because of the hygroscopic nature of the oil.

2. Using Mineral Oil is a better method and a cursory search on the subject will bear that out.

3. Using Nylog to lube the Orings and to help seal mating surfaces, schrader valves, threads, etc.. is better still.

Why anyone would not want to do the BEST job when doing A/C work is beyond me. That has always been the point of my recommendation. You want leaks in your future or corroded parts...do it the 'Denso' way. After all....its good for their business.

 

[highkick05]

More of the hyperbole you deny. It really lends nothing to your argument.



Here is the bottom line:

1. Orings lubed in ND-8 or PAG46 will suffice to install the Oring and join parts. However, if not quickly assembled you risk corrosion and deterioration of the Oring/joint in the future because of the hygroscopic nature of the oil.

2. Using Mineral Oil is a better method and a cursory search on the subject will bear that out.

3. Using Nylog to lube the Orings and to help seal mating surfaces, schrader valves, threads, etc.. is better still.

Why anyone would not want to do the BEST job when doing A/C work is beyond me. That has always been the point of my recommendation. You want leaks in your future or corroded parts...do it the 'Denso' way. After all....its good for their business.

Yes I will rebut this with purely technical jargon , no hyperbole. Yes, I want to be that guy on the forum. I want to be just like you. and use Nylog Blue !

In your "Here is the bottom line:" 1) By quick assemble quick enough you mean with 4-500 years of putting the oil on the new oring? idk

Ok, I agree. Don't use ND-8 oil to lube the orings, as specified by the service manual , DENSO and AC techs.

Go with @flintknapper Nylog Blue and his expert internet research and forum credibility. Oh and years of experience, more than the DENSO parts manufacturers and even reps I'm sure

 

[flintknapper]

Yes I will rebut this with purely technical jargon , no hyperbole. Yes, I want to be that guy on the forum. I want to be just like you. and use Nylog Blue !

In your "Here is the bottom line:" 1) By quick assemble quick enough you mean with 4-500 years of putting the oil on the new oring? idk

Ok, I agree. Don't use ND-8 oil to lube the orings, as specified by the service manual , DENSO and AC techs.

Go with @flintknapper Nylog Blue and his expert internet research and forum credibility. Oh and years of experience, more than the DENSO parts manufacturers and even reps I'm sure

Hah...so you've added facetiousness to your repertoire. Keep digging....you'll reach the bottom soon.

I think your trouble is that you seem incapable of allowing for 'progress'. No room for a 'better' way.

No doubt at some point in the past....a carriage maker specified that only their spoked wooden wheels be used on their product. Then along came rubber wheels and then pneumatic tires on wheels *thankfully*. You can continue to walk the 'good enough' line and I will continue to promote/suggest a 'better' way. There is a place for both, so don't let that trouble you so.

 

[1972FJ55]

More of the hyperbole you deny. It really lends nothing to your argument.



Here is the bottom line:

1. Orings lubed in ND-8 or PAG46 will suffice to install the Oring and join parts. However, if not quickly assembled you risk corrosion and deterioration of the Oring/joint in the future because of the hygroscopic nature of the oil.

2. Using Mineral Oil is a better method and a cursory search on the subject will bear that out.

3. Using Nylog to lube the Orings and to help seal mating surfaces, schrader valves, threads, etc.. is better still.

Why anyone would not want to do the BEST job when doing A/C work is beyond me. That has always been the point of my recommendation. You want leaks in your future or corroded parts...do it the 'Denso' way. After all....its good for their business.

Having managed both an A/C only repair shop and parts warehouse in Arizona for 10+ years, we never used PAG oil on the o-rings. It makes them sticky rather than slippery. It was either mineral oil or silicone o-ring lube. I'm not sure if Nylog was around back then or it might have been what we used. I agree with everything that flintknapper has recommended. Any trace amount that might get introduced into the system would be insignificant to the operation and longevity.

 

[highkick05]

Hah...so you've added facetiousness to your repertoire. Keep digging....you'll reach the bottom soon.

I think your trouble is that you seem incapable of allowing for 'progress'. No room for a 'better' way.

No doubt at some point in the past....a carriage maker specified that only their spoked wooden wheels be used on their product. Then along came rubber wheels and then pneumatic tires on wheels *thankfully*. You can continue to walk the 'good enough' line and I will continue to promote/suggest a 'better' way. There is a place for both, so don't let that trouble you so.

You are so ignorant, but keep spinning. I'm sure another one of your multi's will chime in and support your ignoramous garbage.

I suggest you watch the DENSO videos, DENSO rep videos, the service manual and talk to real AC technicians.

 

[highkick05]

Having managed both an A/C only repair shop and parts warehouse in Arizona for 10+ years, we never used PAG oil on the o-rings. It makes them sticky rather than slippery. It was either mineral oil or silicone o-ring lube. I'm not sure if Nylog was around back then or it might have been what we used. I agree with everything that flintknapper has recommended. Any trace amount that might get introduced into the system would be insignificant to the operation and longevity.

Not sure what you're on about since there's practically 100s of mls of compressor oil lubricating and running throughout the entire system.
Want to educate me on how the orings get sticky? ohh thats what nylog blue is supposed to do. gotcha

 

[Biga27110]

You are so ignorant, but keep spinning. I'm sure another one of your multi's will chime in and support your ignoramous garbage.

I suggest you watch the DENSO videos, DENSO rep videos, the service manual and talk to real AC technicians.

To suggest Denso is infallible is ignorant. Manufacturers have all kinds of restraints and never do what is best. What is best is not profitable. People in the field find what is the best through years of experience. This has nothing to do with any product or recommendation this is common sense.

 

[highkick05]

To suggest Denso is infallible is ignorant. Manufacturers have all kinds of restraints and never do what is best. What is best is not profitable. People in the field find what is the best through years of experience. This has nothing to do with any product or recommendation this is common sense.

Well buy quality orings then. Not my problem you buy them from aliexpress and they 'dry out' or 'become brittle' or 'get sticky'.

Make sure they're AC rated before you Nylog glue them in

 

[1972FJ55]

Not sure what you're on about since there's practically 100s of mls of compressor oil lubricating and running throughout the entire system.
Want to educate me on how the orings get sticky? ohh thats what nylog blue is supposed to do. gotcha

Just try it yourself. Put PAG oil on an o-ring and do the same with mineral oil. If you can't feel the difference, well...
It seems that you're on here just to get a reaction, it be nice if you had something meaningful to contribute rather telling the rest of us how ignorant we are.

 

[highkick05]

Just try it yourself. Put PAG oil on an o-ring and do the same with mineral oil. If you can't feel the difference, well...
It seems that you're on here just to get a reaction, it be nice if you had something meaningful to contribute rather telling the rest of us how ignorant we are.

Flinknappers just mad cos he's scared now he's contaminating everyones AC systems by telling them use Nylog Blue on all the fittings and orings.

 

[highkick05]

It seems that you're on here just to get a reaction

Came on a forum to post stuff to get a reaction? Wow... imagine that. And I nearly felt bad when @flintknapper was trying to insult my intellegence.

Hit the ball out of the park there.

 

[Biga27110]

Well buy quality orings then. Not my problem you buy them from aliexpress and they 'dry out' or 'become brittle' or 'get sticky'.

Make sure they're AC rated before you Nylog glue them in

What are you talking about I clearly stated this has nothing to do with any product or recommendation.

 

[flintknapper]

Flinknappers just mad cos he's scared now he's contaminating everyones AC systems by telling them use Nylog Blue on all the fittings and orings.

^^^^

Yes, that's it. Pffffftttttt.......

I think everyone can see that you are now just 'chumming the waters'. Very sad.

I'm finished here....you keep digging.

 

[highkick05]

^^^^

Yes, that's it. Pffffftttttt.......

I think everyone can see that you are now just 'chumming the waters'. Very sad.

I'm finished here....you keep digging.

Guess I can throw denial in with that ignorance. Not sure how you confuse my criticism of you convincing every member to put Nylog Blue in there AC systems with 'chumming waters'. Keep going though... the desperate come backs after every time you say 'you're done' are making me chuckle.

 

[Red Beard]

@MTrun Where did you end up on this project?