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#4618629 - 12/30/17 09:49 AM A/C and Heater Hose O Ring Lube
Fitz98 Offline

Registered: 03/17/11
Posts: 318
Loc: Florida
I have a 98 Expedition that I just replaced heater core.
Heater core was bypassed because of leak.
I have a couple of older factory hose sections with quick disconnect ends.
What would I lubricate the O rings with when installing the quick connects?
Something available from my home or local parts store.

#4618637 - 12/30/17 09:57 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
bullwinkle Offline

Registered: 10/09/04
Posts: 7331
Loc: Cincinnati, OH, USA
Why not a little Vaseline or similar? I usually use ice cream machine food grade lube, because I have a fair amount of it around.
06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

#4618638 - 12/30/17 09:57 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
double vanos Offline

Registered: 08/05/04
Posts: 1786
Loc: 5600 feet elevation, Arizona
Straight coolant might get it done.
Sabine Schmitz is the Queen of the 'Ring; Svetlana Kapanina is the Queen of the SKIES...

#4618658 - 12/30/17 10:12 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Chris142 Offline

Registered: 06/05/03
Posts: 16324
Loc: Deplorable in apple valley, ca
Any light oil. Just a smear.
02 Wrangler super-s 10w30
87 F250 proline 15w40
04 Tahoe super-s 10w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric edge 5w40
57 case tractor 15w40

#4618690 - 12/30/17 10:36 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Linctex Offline

Registered: 12/31/16
Posts: 5166
Loc: Waco, TX
Vaseline or wheel bearing grease.
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

#4618831 - 12/30/17 01:13 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
NibbanaBanana Offline

Registered: 05/23/16
Posts: 289
Loc: New England
Silicon grease.
1993 Ford E350 5.8L, 68K
2002 Ford E150 4.2L, 85K
2006 Chevy Aveo 1.6L 215K
2013 Kia Reo 1.4L, 101K
7500 OCI, M1 5-30 winter, M1 10-30 summer

#4618842 - 12/30/17 01:25 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Trav Offline

Registered: 11/20/06
Posts: 17755
Loc: MA,
On quick connects I usually us Nylog blue because I have it around but silicone grease or as someone said just plain coolant works fine too.
ASE L1, Master. Deutsch Meisterbrief.

#4618863 - 12/30/17 01:54 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Lubener Offline

Registered: 01/22/11
Posts: 2432
Loc: N.Ohio
I just smear some coolant on them if you don't have some silicon grease.. You just want them to slide in place and not twist as you insert them.I wouldn't buy anything special.
The "thinking" man's friend.

#4623241 - 01/03/18 10:24 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
andyd Offline

Registered: 09/25/04
Posts: 6732
Loc: Marshfield , MA
green anti-freeze, even when cut 50%, is pretty darn slippery.
'16 Camry LE STP synth 0w20 and STP filter.

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline bulk 0w20 and ? filter

#4624817 - 01/05/18 11:13 AM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
Fred_Garvin Offline

Registered: 08/22/13
Posts: 46
Loc: Upstate NY
Water, anti-freez, a mix, dish soap, spit, anything but a petroleum product. [censored] an oldtimers trick was to use brake fluid on the hoses. Make nice n slippery then when dried it sealed em up so they had to be cut off.

#4682489 - 03/02/18 04:37 PM Re: A/C and Heater Hose O Ring Lube [Re: Fitz98]
slomo Offline

Registered: 08/23/13
Posts: 161
Loc: Oklahoma
Magic Lube is what you are seeking. 100% silicone grease and super tacky. Great for other around the house plumbing tasks and O-ring lubing. Get it at your local swimming pool supply. Will not eat O-rings.