OP, I know what you mean lol
The tip of the stick is matte finish. If you just wave a light source (e.g. mobile phone backlight), that will create reflections where there is oil. It gets really obvious
The flashing trick doesn't work well under bright sunlight tho. In-garage or dark days only
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'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
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