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Message: <blockquote data-quote="nyuk98gt" data-source="post: 179430" data-attributes="member: 8810">GThang98:That is a weep hole. It is there to tell you that the o-ring has failed or is in bad condition. I will check my Haynes manual (and, if I have to, the shop manual) to see if there is a write-up and then post back. **edit: OK, p. 3-7 and 3-8 shows what you need: * Drain coolant. * Remove the lower radiator hose from the oil cooler. * Remove the oil filter (you might as well change your oil afterwards in case you get some coolant into the oil). * Use a 1/2" Allen key to remove the cooler from the oil cooler housing.  * Pull the cooler off the adapter (that is bolted to the engine block). * Replace the o-ring on the oil cooler and the o-ring on the adapter housing.  (Use a thin film of oil to lube the o-rings before you slip them into place). * Re-install by reversing the above steps. * Torque to 41 to 53 inch-pounds (about 4 lb-ft), if you have a 1/2" Allen wrench socket. Otherwise, snug up the Allen wrench but don't crank it down. * Change your oil (Optional. I just added it for good measure/cheap insurance). That should do the trick. **end of edit. Stay tuned.Chris</blockquote>