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Oily vacuum lines

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Old Feb 23, 2019 | 02:02 PM
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Default Oily vacuum lines

Every time I've popped the hood this winter I've noticed the vacuum hoses- starting at the check valve and over toward the canister -have an oily coating on them.

Is this a hose deteriorating or could it be something actually evaporating and condensing on the hoses?
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Old Feb 23, 2019 | 02:30 PM
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Modern rubber is oil based. The rubber is leeching oil, and dying. Just replace them. I think the medical center has the best ones. IMHO.
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Old Feb 23, 2019 | 05:49 PM
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Thanks. I'll definitely be getting new hoses. My check valve barely stays put now.
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