Definitely drain your oil/ATF mixture.   I usually only run that for about an hour - then drain and fill with fresh 15-40 Delo.

Here is a you tube video link of my car and the noise it's making. I should note that I used a stethoscope today and the noise seems to be coming from the number number 3 and 2 heads...

 

http://www.superiorimportrepair.com/ talk to these guys.. they are helpful..they should get you with a oil pump.. bit first I would pull the valve cover and inspect camshaft see if it is loose.. then go to foster pick n pull somebody already pulled cam carriers off 93 loyale ea82 they are laying in the back seat

if the ticking is always isolated to one (or two) HLA's/areas then: 

 

1. they frozen/stuck

if this is the case - pull the avlve cover and see if they appear notably stuck/less movable than the rest.  as i think i've already detailed earlier. 

 

2. the oil pump is still the cause and those are the first ones affected for a litany of reasons (age, wear, distance from pump, oil supply routing

if this is the case - replace the oil pump.

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