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Used Wrong PAG Oil......

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Annihilator
Posts: 37
Joined: 15 October 2010
Year and Model: 1993 850 GLT
Location: Chicago, IL

Used Wrong PAG Oil......

Post by Annihilator »

Hi all, I mistakingly added 3 ounces of PAG 150 (correct for my truck) oil in my '97 which I believe calls for PAG 46. I added oil this time as I have an A/C leak and have to charge it at least once a year. A shop can evacuate the system but I believe there is still majority of oil left in the system​. I hear there's a drain bolt on back of compressor? Ideas? Thanks!
1995 850 GLT - SOLD
1993 850 5 - Speed - SOLD
1997 T-5 203k
2005 S80 AWD 112k 2.5

cn90
Posts: 8249
Joined: 31 March 2010
Year and Model: 2004 V70 2.5T
Location: Omaha NE
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Post by cn90 »

I'd not worry too much.
Different PAG oils just have different viscosity.
If you a little search, then PAG 46 (thin), PAG 100 (medium), or PAG 150 (thick) is almost like the oil analogy of let's say 5W30, 10W30, 10W40 and all that jazz.

PS: Most compressors do not have a drain plug simply b/c there is no need for that. You can suction some out using a small tube and syringe etc.
But a bit of PAG 150 in that system is fine.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

beigg
Posts: 691
Joined: 22 September 2013
Year and Model: 850 97
Location: Est. Mi

Post by beigg »

150 might slow the leak a tad, if lucky.
ugh smh 850 Turbo fridge

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