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add PAG oil ???

73Wagoneer on Sun January 06, 2008 12:49 PM User is offline

Year: 94
Make: Honda
Model: Civic
Engine Size: 4cy
Refrigerant Type: R134
Ambient Temp: 65

I am getting ready to recharge my wife 94 Honda civic, late last summer it wasn't cooling like it normally did, and I would like to get it nice and cool for the upcoming summer, I know I have to recover what refrigerant is in there and start from scratch, the system has never been opened I was wondering if I need to add any pag oil and is BAV 100 oil compatible with pag?

thanks Robert

TRB on Sun January 06, 2008 2:21 PM User is offlineView users profile

Best to use the same type of oil you currently have in the system. BVA Auto 100 will work with a PAG but I always prefer one oil type. If you have a leak and have noticed oil spots I would add some back to the system. How much is a guess. small leak maybe an ounce.

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ice-n-tropics on Mon January 07, 2008 10:41 AM User is offline

AMA can supply the genuine OEM Sanden SP-10 PAG lube (from Big O #41-50013-8) for one 8.5 oz. can as used by Honda.
Cordially,
Old IV guy

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NickD on Mon January 07, 2008 1:20 PM User is offline

Quote
I know I have to recover what refrigerant is in there and start from scratch

Who told you that? Your car is already 14 years old and if you just lost 1/2 ounce per year, that's seven ounces! And it wouldn't cool worth a darn with that much loss. If it's still cooling reasonably, you haven't lost that much. I would carefully check the system for any oil leaks, and if none are found, just top it off. But this has to be done on a warm day, prefer at least 85*F, but 80*F is okay, engine running at 2,000 rpm, doors open, AC on, blower at max.

Your vehicle should have a sight glass, but I am a bit uncertain with R-134a as yearly changes are made, at the above conditions, some bubbles in the sight glass will be normal, manifold gauges would work, bring up the low side to around 26-27 if it is much lower than that and watch the high side for around 210 psi or less and see what happens, you can feel it at the AC vents. Would try that first.

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