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A/C Compressor Oil Leak?

fanofRs

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Hello guys. Could use some help here. I have a CLEAR colored oil leak. The oil drips from the aluminum pipe down to the black rubber hose and then to the lower cover/pan below. What do you think? A/C compressor oil leak at the aluminum fitting pipe joint? I don't think its pipe condensation from above as it is oily in the hand. Check out the photos please and the link for more.

https://photos.app.goo.gl/8eEWGNpyUtnNHKfE7

2023 with really low miles. A/C still blows cold.

Anyone have A/C leak issues on these Type Rs? Covered under warranty?

Thanks!

11th Gen Honda Civic A/C Compressor Oil Leak? PXL_20260311_184719024-EDIT


11th Gen Honda Civic A/C Compressor Oil Leak? PXL_20260514_192012060-EDIT
 
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cryptolime

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a shop can check to see if that's a refrigerant leak with a special light they have. I think dye is added to the refrigerant/oil. if it is a leak, it's covered under warranty.
 

J_D

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Also I would assume that is some random oil that has leaked nearby. I have only ever seen PAG oil look a diseased green colour
 
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fanofRs

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Thanks for the feedback. Good point about refrigerant leak detection. I do have a black light and a new "sniffer" in a A/C gauge kit I purchased.

Yes, I thought PAG oil had a color to it too. I'm recalling my 90s Nissan I converted from R-12 (green) to R134a. The compressor oil had to be changed.

Well, apparently not colored if no indicator dye was added...

11th Gen Honda Civic A/C Compressor Oil Leak? Screenshot 2026-11-13 103838


11th Gen Honda Civic A/C Compressor Oil Leak? Screenshot 2026-11-13 103558


11th Gen Honda Civic A/C Compressor Oil Leak? Screenshot 2026-11-13 102256
 


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fanofRs

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Regarding another leak source, I thought the same thing and looked all over but appears to be dry. Also, all motor oil (brownish) components (turbo/lines, etc.) are recessed back an inch or so from the A/C line.

In this zoomed in photo you can see the refrigerant line condensation that could accumulate and run down to the drip location in question. Just don't see why it would be oily.

11th Gen Honda Civic A/C Compressor Oil Leak? Screenshot 2026-11-13 101011
 
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fanofRs

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Just stumbled across this FL5 R-1234yf concern. Hmmm.

Link

 
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cryptolime

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Just stumbled across this FL5 R-1234yf concern. Hmmm.

Link

that's why it's a good idea to use your A/C as often as possible. People think by not using their A/C it will make it last longer but it won't. Running the A/C keeps the oil circulating throughout the system, slowing corrosion.
 

J_D

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Just stumbled across this FL5 R-1234yf concern. Hmmm.

Link

Honda is not switching back and it’s armchair engineering to just call 1234 corrosive. The system is designed to use it. Brake fluid will also destroy anything it touches....outside the braking system.
 
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fanofRs

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that's why it's a good idea to use your A/C as often as possible. People think by not using their A/C it will make it last longer but it won't. Running the A/C keeps the oil circulating throughout the system, slowing corrosion.
Agreed. Keeps all of those seals/o-rings lubed too. I cycle my A/C during the winter for that reason.
 


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fanofRs

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Honda is not switching back and it’s armchair engineering to just
call 1234 corrosive. The system is designed to use it. Brake fluid will also destroy anything it touches....outside the braking system.
Great point.
 
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fanofRs

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Maybe I'll send this thread to the my Honda dealer to get their opinion.
 
 







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