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Clean it off and see where its leaking. May be rear seal. You may have more than one leak. Looks like it may need a new plug also. How is the seal on it? Get a new one make sure it isn't tightened down super tight. Don't know the exact spec but prob 10-12 Its hard to tell from the picture or see how far to the front is oily. Check oil cooler lines also if equipped. Does it have the remote oil filter like the blazer? They had problems leaking.
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