Tmoose
Mechanical
- Apr 12, 2003
- 5,633
The stuff that takes a scraper to remove from corners and low spots. Comes off in chunks sometimes.
There are plenty of stories about what that gray stuff is, and isn't.
Like zinc from ZDDP, or the final result of moisture from combustion byproducts the non-detergent oils couldn't handle, and so on.
My favorite is lead from "leaded" gas.
1 - Does anyone know what it really is?
2 - Does anyone know A simple inexpensive chemical test to differentiate lead from zinc. Anything from color change to Class O G pyrotechnics is fine.
thanks
Dan T
There are plenty of stories about what that gray stuff is, and isn't.
Like zinc from ZDDP, or the final result of moisture from combustion byproducts the non-detergent oils couldn't handle, and so on.
My favorite is lead from "leaded" gas.
1 - Does anyone know what it really is?
2 - Does anyone know A simple inexpensive chemical test to differentiate lead from zinc. Anything from color change to Class O G pyrotechnics is fine.
thanks
Dan T