whilst replacing motor mounts on my 95 wagon the hydraulic line into the power steering pump went kaput. No problem, I ordered hydraulic fluid and hose from Fastlane right away and while I wait decided to clean the reservoir tank as there is a bunch of sludge on the bottom. The question is...what solvent do I use to remove the sludge?

Thanks in advance.

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I have never met a man so ignorant that I couldn't learn something from him. -Galileo Galilei, physicist and astronomer (1564-1642)