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Old 09-05-2019, 10:40 PM
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Join Date: Jul 2018
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4.8 Oil Leak Drivers Side

Chasing down an oil leak on my 07 4.8, at first it was just a few drops on the driveway, but has now turned into a spot instead of a drop. It is very noticeable when driving first thing in the morning as the oil must be getting on the manifold, and smokes a bit on the drivers side when it burns off. I am thinking that it is most likely the valve cover gaskets, but just wanted to see if there is anything else I should be checking?

I have looked into the oil thermostat a while back, but this leak is higher up as it is getting on the exhaust.

Valve cover gaskets will be changed when I do my valve seal replacement, have been putting that off like the plague.....
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Old 09-05-2019, 10:49 PM
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Join Date: Jan 2018
Location: Charleston, SC
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4.8 Oil Leak Drivers Side

Most likely valve covers, timing covers, or alternator/oil cooler bracket. In my opinion a drop turning into a spot is probably more likely to be the alternator/oil cooler bracket but you could have more than one leak. Timing cover leaks are pretty easy to see. My valve covers started to leak all over but I had the alternator bracket leak as well.


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