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Old 13th June 2019, 08:07   #17
SD1too
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

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Quote:
Originally Posted by marinabrian View Post
... PAG oil is hygroscopic .... PAG oil and moisture together are not a good combination as when they mix, it forms an acid, causing damage or failure to system related components.
That's why there's a drier in the system containing dessicant.

Simon
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