LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2003 >> Wrangler SE, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (4.0L Engine) >> Engine Block >> Cleaning
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Block: Cleaning

WARNING: This page is about a different variant/trim than selected.

Thoroughly clean the oil pan and engine block gasket surfaces.

Use compressed air to clean out:

Once the block has been completely cleaned, apply Loctite PST pipe sealant with Teflon 592 to the threads of the front and rear oil galley plugs. Tighten the plugs to 34 N.m (25 ft. lbs.) torque.