what size so socket is needed? Also is it ok to take out with the oil level a bit below low on the dipstick or will it still leak oil?

 

I dont know the size, but if you go to like Autozone or whatever part stores you have and you go to the tool isle, its just the normal Oil Pressure sensor socket and its like 6 bucks.

Since the sending unit is near the middle of the block you will be fine. the oil pan is well below it so it may drip a little depending on how much oil is left (aka how long after you've driven it) but thats about it.

 

yeah, ya don't wanna do it right after driving...you got the hot exhaust right there, not to mention the hot oil. that's never fun.