So...I was changing the oil on my aunt's 2003 Mitsubishi Lancer, which has somewhere around 100k on it.
Only about 1 and a half quarts of oil drained out.........and it was really dark. I asked her when the oil was last changed, and she wasn't sure, said maybe 8 months ago (!!). She had been adding some oil here and there. Not sure how the oil light wasn't on!
I noticed a lot of oil on the undercarriage, it looked like it was coming from the oil filter, but hard to tell...filter wasn't double gasketted.
After the oil change was done, we started it up and I noticed a loud clicking sound at idle, sounded like sticky lifters? Not sure if the sound was there before. Oil level was checked, and it was at the full mark. After a bit of idling it quieted down a bit, but definitely still there and didn't sound pretty.
Question is, did she damage the engine by running it so low on oil? Is that clicking sound usually evidence of any specific damage/problems? I know it's water under the bridge now, and I gave her a scolding, but just curious if she might be looking at some engine trouble in the near future.