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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 203 (Engine Mechanical - 3.5L) >> Diagnostic Information and Procedures >> Oil Leak Diagnosis >> Powder Method

Powder Method

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Completely clean the entire engine and surrounding components.
  2. Apply an aerosol-type powder, baby powder, foot powder, etc., to the suspected area.
  3. Operate the vehicle for several miles at normal operation temperature and at varying speeds.
  4. Identify the type of fluid and the approximate location of the leak, from the discolorations in the powder surface.
  5. Visually inspect the suspected area. Use a small mirror to assist in looking at hard to see areas.

    Refer to Possible Causes for Leaks .

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