Parts for your 2000 Holden Commodore-Oil seals

2000 Holden Commodore oil seals — what they do and when to sort them

Oil seals absolutely are used on the 2000 Holden Commodore. Technical references such as the Holden VT/VX Service Manual, the GMH Electronic Parts Catalogue, and mainstream seal catalogues (SKF, Timken/National, Repco/NAPA) specify multiple seals on these models, including the front and rear crankshaft seals on the 3.8‑litre Ecotec V6 and 5.7‑litre Gen III V8, transmission input/output shaft seals (4L60‑E and manual variants), and BorgWarner M78 differential pinion and axle seals.

On a 2000 Commodore, oil seals exist to keep lubricants in and grit out while the shafts spin at engine, gearbox and diff speeds. That means fewer leaks, better lubrication and longer life for bearings, bushes and clutches. Common seal locations include:

• Engine: front crankshaft (harmonic balancer end) and rear main seal
• Transmission: input and output shaft seals, selector shaft seal
• Differential: pinion seal and axle oil seals

For day‑to‑day servicing, seals aren’t a scheduled replacement item, but they should be checked every service. Look for fresh oil around the crank pulley/balancer, the bellhousing joint, the transmission tailhousing, and the diff nose. Tell‑tales include driveway spots, a hot‑oil smell on the exhaust, ATF mist on the tailshaft, or oil weeping down the diff pumpkin.

Good practice when replacing any Commodore oil seal:

• Use quality seals (Viton where heat’s high) and the correct driver so the seal goes in square.
• Lightly oil the seal lip and inspect the shaft surface