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Water Tank recovery vs. Coolant reservoir

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Old 07-11-2011, 05:22 PM
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Default Water Tank recovery vs. Coolant reservoir

on 2000 XKR- do you fill the cooling system from the coolant reservoir on top of the engine or by the overflow recovery tank. Since the sensor it in the reservoir, I am guessing that it where you care about the level and by the way, where exactly is the overflow recovery tank hiding.

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Tom in Dallas
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Old 07-11-2011, 05:26 PM
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The reservoir.

Behind the left wheel well lining to the rear.
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Old 07-11-2011, 05:29 PM
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Now where do you fill the cooling system from- the overflow or the reservoir where the level sensor is? Is the overflow tank just merely that- an overflow tank. Does the system draw water from the overflow tank at any point? What type of pressure does the overflow tank operate under- system pressure or atmospheric pressure.

TB in Dallas

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Old 07-11-2011, 06:16 PM
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You fill the reservoir and then the pressure cap takes care of everything from there.

Coolant is recovered from the overflow tank to the reservoir due to the vacuum created by the cooling engine. Sometimes, with older hoses, the vacuum can be strong enough to collapse the upper radiator hose.
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Old 07-11-2011, 07:58 PM
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On an XKR, you neeed to fill from both the overflow recovery tank AND top off resevoir on top of the engine (with the 19mm hex bolt) between the two heat exchangers.

And it is the overflow recovery tank that has the level sensor.
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Old 07-11-2011, 08:15 PM
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Quote:
Originally Posted by WhiteXKR View Post
On an XKR, you need to fill from both the overflow recovery tank AND top off reservoir on top of the engine (with the 19mm hex bolt) between the two heat exchangers.

And it is the overflow recovery tank that has the level sensor.

Thanks. So is that a difference between the XK8 and the XKR both location f sensor and how they are filled?

TBB in Dallas
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