Where is the oil cooler on saab 93?

Why is smoke coming from the oil filler cap when engine running on my Saab 93?

  • Answer:

    This is a normal result of running the engine. Hot oil, or most any hot liquid, will vaporize to some extent depending on the temperature and pressure involved. The oil pump forces the oil through the engine passageways at about 50 psi (more or less) so that all moving parts are lubricated. The oil becomes heated through the friction of the moving parts, to around 250 degrees F. What you are seeing is the vaporization of the oil.

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