General Motors — Changing Engine Oil and Filter
Maintenance · Engine lubrication system
From a General Motors owner's manual covering: Carb 5.7L, MP 5.0L, MP 5.7L, MP 6.0L. Check it applies to your exact model before use.
Before you start
- Do not remove the oil filter bypass adapter when changing the oil.
Procedure
- With the engine at normal operating temperature, remove the dipstick and install a crankcase oil pump onto the dipstick tube; pump the oil out until the crankcase is empty.
- Remove the oil filter by turning it counterclockwise, using an oil filter wrench if necessary; discard the old filter and sealing ring.
- Coat the sealing ring on the new filter with clean engine oil; install the oil filter securely by hand; do not overtighten.
- Fill the engine with the recommended oil through the oil fill location on the valve cover.
- Start the engine and operate for 5 minutes to circulate the oil; check entire system for leaks.
- Stop the engine and wait 5 minutes, then check the oil level and adjust as needed.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: General Motors owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.