Does the engine start OK in cold weather? If yes, then you've performed the ultimate compression test and no further testing is required.

What is the problem you are trying to solve?

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC