If oil is forced out the dipstick tube because the pressure in the crank case is too high, seems to me that you need to investigate the cause of the high crankcase pressure?

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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