New Holland T8010 Manual page 1142

Section 50 - Climate Control - Chapter 2
STEP 130
If the oil level is not correct, add or subtract oil to the
correct level described above. Always add oil in small
quantities to avoid overfilling; to subtract oil the
compressor must be removed and drained.
IMPORTANT: Use only SP-20 PAG oil.
STEP 131
Check O-ring on the oil filler plug and replace if
necessary. Install the plug and tighten to a torque of
11 to 18 lb. ft. (15 to 24 Nm).
RD02H046
50-2-81