What's the longest amount of time a truck sat and engine still good?
 

Wondering how these diesels can set, in a field, or in a garage so that when revived can still be in operable condition

without changing fluids it depends on how quickly the diesel grows alge (which depends on how much fuel in tank, temps, yada yada yada)

If you mean pulling vehicle out of field, changing all fluids and going from there...it's a pretty dang long long time.

I just revived a 1931 model a ford that had been in a barn since 1971.purrs like a kitten.oiled the cylinders down before even turning over.hot wired and fuel from a can and NOT the tank and bam..

Had a 81 Jetta diesel sit for ten years. Fired it right up, changed the oil and took off at 40mpg. Dryer climate so I don't know about algae.

Glenn how much fuel was in it at the time of start up ?

About a half a tank.

My reg cab sat for almost 2 years with a bad fuel pump and half tanks. I swapped the pump and drove it 4K miles before I ever changed the oil.

Diesel Rod

Your so mean Rod, :-missingt

The first trip to town the CCV was billowing out steam......it came down to a normalish level after a few hundred miles. Must have been a fair amount of condensation in the oil.. that was years ago and I'm still driving that truck.

FWIW in 94 I bought my parents old '76 Cheby 3/4 ton. It had sat for almost 10 years. I put new fluids and ignition parts on the 400SB and I drove the heck out of it. The motor is still running today in my T/A.

Diesel Rod