Recently I noticed an oil leak (see pictures below), which concerns me. I took it to a local mechanic shop this morning. They wiped off the oil from the side of the engine and asked me to bring it back after a few days so they can see where the leak is coming from. Right after I got home, I could see the leak developing again. I've circled the oil in red on the images. You can't see it in these images but there is oil underneath the exhaust manifold cover as well. The mechanic told me that the leak didn't look bad. So far it's not bad enough to drip onto the ground. But just a few miles and it's leaking already so I'm pretty concerned. I thought I'd look for help up here before bringing it back to the shop.

Some background information which may or may not be relevant:
- It's a 1991 Integra LS but low miles. Just hit 66k. I bought it at 60k. Looking at the maintenance history, the previous owner clearly didn't drive it much. What's interesting is that before I bought the car, it did roughly 20k in the 10 years prior. Thus, it's possible that the car was garaged for extended periods of time without being started up and driven.
- I had the water pump, timing belt, cam seals replaced at 61k. The leak developed shortly that but it doesn't look like cam seals are the problem.
- Not too long after the water pump and timing belt replacement, I accidentally added 1/4 of a quart of oil. The oil was clear and it was kind of dark so I couldn't see the dip stick very well so I added some oil when it wasn't needed.

Anyone has any idea what might be the issue here and what course of action I should take. Thank you!

 

Cam end cap, common problem.... 94

 

yeah the cap like he said

 

Thank you. I can address that. I hope that's all but the amount of leak makes me think there is something else here, too.