Oil Leak..But Where?
 

Alright so i have a 88 blazer 2.8L that currently has an oil leak i dont no the truck to well yet because i bought it a month ago. I had a leak alittle while back where the oil intercooler used to be it seemed the owner before me had taken it out and just put screws in ?... so i welded it shut.. Now i am having a leak still on the driver side not from the pan or oil filter i dont no where its coming from ? Is there any lines i should be looking at ? i was thinking maybe the oil pressure thing that is beside the filter.
Its usually all over the left side controll arm.. at first it wasnt to bad but now its leaking every where! Help me please! will answer any questions you may have

Sounds like the oil pressure sender to me given the location you describe.