Make sure your oil level is correct, the drop in OP may be oil sloshing away from the oil pick up. If the level is correct, you may have sludge blocking the pick up screen. Look under the valve covers, do you see a lot of sludged up oil there? If so you may need to pull the engine and clean out the oil pan and pump pick up screen.
_________________ 88 Four Winns 200 Horizon 4.3 OMC Cobra-4bbl 2002 Walker Bay 10/2012 Suzuki 2.5 2008 Walker Bay 8
1998 Jeep Grand Cherokee 4.0/Selectrac 2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II
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