coolant leak 2005 XJ8L

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05-26-2023 | 02:03 PM

ronrowand

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Joined: Jan 2013

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From: clearwater, florida

coolant leak 2005 XJ8L

[QUOTE]Losing 1 quart every 100 miles consistently. Mechanic has twice pressure tested overnight with no loss. Ideas?

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05-26-2023 | 06:46 PM

meirion1

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Joined: Nov 2009

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From: The beautiful Mornington Peninsula in OZ

I can only assume that it leaks only when the engine is hot.
Maybe start with a hot engine in the morning and run test during the day
also running the engine periodically to keep it hot.

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