Because he had two more quarts to add, he wasn't finished.

 

precisely

 

i would of put the last 2 quarts in and put the cap on. would of taken what, 30 seconds? dinner won't get cold in 30 seconds

 

so Is there no danger to driving with the oil cap off? Will this lead to a lack of oil pressure? I started my S after an oil change without the cap on (all the oil was in) and ran it for about 1 minute before I realized it was off. I didn't see the oil light come on or anything.

 

Running it for a minute without the oil cap will not cause any harm. If anything, oil will spray onto your hood and engine bay.

 

Driving w/o an oil cap will only cause a loss in oil preasure if a lot of your oil is lost via splashing out. I would imagine this would take a while, but I sure won't be testing the timeline.

GT- How much oil did you lose in the 20 minute drive?

 

I almost did this on my last oil change (but just backing the car up to check for leaks) but upon starting up the engine I heard the odd noise as I still had my hood up. Sounded like an odd pressure noise. I immediatly put the cap on, lol.


As others have said, how much oil did it lose in 20 miles?

 

I'd be more worried about someone driving 2 quarts low than a missing oil cap.