Oil cooler o-ring replacement – Turbo Regal

When your Turbo Regal starts leaking oil from the oil filter area, chances are it is the o-ring between the block and the cooler.  After 25 years these will be quite perished and no seal lasts forever.

To complete this job, you will need:

• oil cooler o-ring – I got mine from Highwaystars.  You can also opt for GM part # 25530999
• 1 1/8″ socket
• torque wrench (optional but desired)

Procedure:

1. Remove the oil filter.
2. Using the 1 1/8″ deep well socket, loosen the nut that holds the oil cooler to the block
3. Use a pick to remove the o-ring.  Make sure the old remnants are completely gone.
4. Lube the new o-ring with oil and put it in place
5. Tighten the nut in place but do not over-tighten!  The spec is 18 ft/lbs.
6. Reinstall the filter and start the car, checking for leaks.