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p80 cooling bleed valve

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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abscate
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p80 cooling bleed valve

Post by abscate »

Has anyone used the valve of the right side of the engine for bleeding or flushing the cooling system?

It looks robust but I haven't ever moved mine.
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tryingbe
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Post by tryingbe »

Never. Lower radiator hose to the radiator is easier to get to and less chance to break something.
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scot850
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Post by scot850 »

I have and it helps for flushing the block, but don't go ape on it. It is brass. Soak in PB Blaster for a while and use a 6 point socket or wrench and easy does it. Any doubts, leave alone!

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RussB
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Post by RussB »

tryingbe wrote:Never. Lower radiator hose to the radiator is easier to get to and less chance to break something.


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erikv11
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Post by erikv11 »

Yeah, but sometimes (rarely) you want to empty the block too, which the lower hose doesn't do. Like earlier this summer when I pulled an engine with the car inside the garage, wanted to minimize stray fluid spills. Or when you are trying to flush out as much as possible all at once etc.
'95 854 T-5R, Motronic 4.4, 185k
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