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What did you do to your Volvo today?

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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RickHaleParker
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Re: What did you do to your Volvo today?

Post by RickHaleParker »

ZionXIX wrote: Tue Aug 04, 2020 3:01 pm Does anyone know what the residual capacity for coolant is on the P80 turbo engines? The total capacity is listed as 7 liters. I want to switch coolant types and I'm planning to do a system drain and fill with distilled water. Would the remaining water affect the the new 50/50 mix?
If you flushed it with water the residual capacity does not matter. You add 3.5L of undulated antifreeze them top off with distilled water get 50/50. †

† Not to distilled drinking water. Pure water is tasteless. They add minerials back in to give drinking water flavor.


My biggest concern is: if you used tap water to flush the coolant system. Tap water can contain Minerials that can leach out and coat the walls of the coolant system. Lowering the coolant system thermal conductivity. Hindering the coolant system's ability to transfer heat.
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Re: What did you do to your Volvo today?

Post by ZionXIX »

RickHaleParker wrote: Tue Aug 04, 2020 9:34 pm
ZionXIX wrote: Tue Aug 04, 2020 3:01 pm Does anyone know what the residual capacity for coolant is on the P80 turbo engines? The total capacity is listed as 7 liters. I want to switch coolant types and I'm planning to do a system drain and fill with distilled water. Would the remaining water affect the the new 50/50 mix?
If you flushed it with water the residual capacity does not matter. You add 3.5L of undulated antifreeze them top off with distilled water (Not to distilled drinking water) get 50/50.

My biggest concern is: if you used tap water to flush the coolant system. Tap water can contain Minerials that can leach out and coat the walls of the coolant system. Lowering the coolant system thermal conductivity. Hindering the coolant system's ability to transfer heat.
I bought several gallons of distilled water just for the occasion. I already purchased 50/50 prediluted since local parts store did not have concentrate in stock. I think a little less than 50/50 in the end should be fine with a change out at the next oil change. Just wanted other opinions.
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Re: What did you do to your Volvo today?

Post by RickHaleParker »

ZionXIX wrote: Tue Aug 04, 2020 9:47 pm I bought several gallons of distilled water just for the occasion. I already purchased 50/50 prediluted since local parts store did not have concentrate in stock. I think a little less than 50/50 in the end should be fine with a change out at the next oil change. Just wanted other opinions.
I suggest you go ahead and top off with the premix. Use a Antifreeze test strip to measure the concentration. If you need higher concentration. Acquire some undulated antifreeze before winter and make adjustments.
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2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
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Re: What did you do to your Volvo today?

Post by abscate »

The residual in the system after dumping just from the radiator stop cock is substantial, like 3-4 liters

That’s why the preferred method is to flush with water, drain and add 4 liters concentrate after closing the stopcock.

You will have to use compressed air and hoses to get the residual water out.

There is also another drain cock on the water pipe on the right side of motor, toward rear of car on the water pipe, probably best reached from below. I’ve cracked one of these on an engine as I was always scared it would break off and leave a nasty job. It is very high quality brass fitting and it released easily
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Re: What did you do to your Volvo today?

Post by ZionXIX »

3-4 liters is an insane amount of residual capacity. None of my local stores stock the concentrate so I'll have to put the green stuff in that I already have on hand and do a change out later.
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Re: What did you do to your Volvo today?

Post by brunocerous »

Last weekend, with temperatures near 90 degrees, I drove home the '98 T5 with the kids because it's the only P80 I have with air conditioning, I swapped in a new AGM battery to replace the old one that kept dying — and now it doesn't start anymore. I just get a click/sproing sound when I try to crank it.

My brother says it's likely the antenna ring, so it looks like I'll be swapping it out this afternoon.

Could it be something else? Bad starter? AGM battery?
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Re: What did you do to your Volvo today?

Post by amblerman »

ZionXIX wrote: Wed Aug 05, 2020 6:31 am 3-4 liters is an insane amount of residual capacity. None of my local stores stock the concentrate so I'll have to put the green stuff in that I already have on hand and do a change out later.
What kind of coolant type do you want switch to?
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Re: What did you do to your Volvo today?

Post by bmdubya1198 »

brunocerous wrote: Wed Aug 05, 2020 8:21 am Last weekend, with temperatures near 90 degrees, I drove home the '98 T5 with the kids because it's the only P80 I have with air conditioning, I swapped in a new AGM battery to replace the old one that kept dying — and now it doesn't start anymore. I just get a click/sproing sound when I try to crank it.

My brother says it's likely the antenna ring, so it looks like I'll be swapping it out this afternoon.

Could it be something else? Bad starter? AGM battery?
I don't think the '98 has an antenna ring, and if so, it will crank, but not start.

So does it try to crank, or does it crank and not start?
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Re: What did you do to your Volvo today?

Post by abscate »

Yeah , even Dr Brothers have their limitations.

No crank is ignition switch, wiring , or clutch switch on the M56

Go find the remote starter bypass and confirm your battery , starter, and main cables are all sound

Chock it, triple check in neutral, and parking brake firmly on when you use the bypass
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Re: What did you do to your Volvo today?

Post by ZionXIX »

amblerman wrote: Wed Aug 05, 2020 8:29 am
ZionXIX wrote: Wed Aug 05, 2020 6:31 am
What kind of coolant type do you want switch to?
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