I have had several close calls, most of my machinery is original purchase and older.

1) JD 4640, changed oil in engine, but caught mistake within minutes after I started it and ran it. I put in hydraulic oil. 55 gallon drum looked the same as engine oil.

2)JD 7720 combine, drove it 3-4 miles down the road, after oil change. when , oil covered the windows. Old gasket still on when I put new spin on oil filter on.

Excuse: poor lighting, standing on head to change oil filter.

3) 1975 F600 grain truck, spin on oil filter/ again, oil puking out.

Excuse: poor lighting, old gasket left on when changing.

4) JD 8400, gasket kinked

Excuse,  poor lighting, /how the Hll, is a gasket supposed to stay in place with vertical spin on filter.

Gravity:>)

5) 1972 F600 grain truck, today. 7 round trips hauling gravel after oil change.

Decided to have a tire changed in town, started down the road when I noticed what I thought was dust behind me.

Stopped and it was oil puking out the oil filter, smoke on exhaust.

Ended up being, the rubber gasket on a canister oil filter.

You know, the vertical /bolt thru, paper filter inside.

My mistake, I put a rubber washer where it should have been a fiber gasket.

So far, I have caught all mistakes before damage.

Funny thing is , I rarely check oil level in my pickups, btw oil changes.

3000 miles usually.

Anybody else as lucky as me in "bonehead mistakes"

Brian