ENGINE OIL GRADE
SAMPLE AND ANALYSIS
(1) Take engine oil sample from engine oil
sampling valve (TM 10-3930-673-10).
(2) Have engine oil sample analyzed.
(a) If engine oil sample is of correct
grade, notify Direct Support about
(b) If engine oil sample is of incorrect
grade, shut down engine
(TM 10-3930-673-10) and replace
the current oil with oil of correct
grade (Para 4-2).