"George E. Cawthon" wrote:

Duane Bozarth wrote:
PrecisionMachinisT wrote:
...

Back to the oil--always seems to dissappear within a year or so from my
gravel drive, and I find it hard to believe its all being washed away by the
rain...


The area where we drained oil from tractors and trucks from as far back
as the 20s until toughly the 70s or 80s is now covered in grass and is
indistinguishable from that area surrounding it...when I was a kid it
looked like almost like a paved road. It's broken down pretty well.
Not a smart thing to have done, certainly, and I suspect a soil sample
would show some residual, but certainly doesn't appear permanent....

Actually, the soil compression from logging is
probably overall more harmful than any petroleum
spills, fish excepted.

No way to test that hypothesis here...

Although minimizing compaction w/ low- and no-till is showing very good
results after a number of years of continuous practice.