What is this dipstick on the top of the engine bay?

[Frodo]

Related question: When you check the levels on these, does one twist the dipstick down tight, then unscrew and read it? Or should you just push it firmly in place (without screwing it down) and then pull up and read?

[piper6909]

Originally Posted by Frodo

Related question: When you check the levels on these, does one twist the dipstick down tight, then unscrew and read it? Or should you just push it firmly in place (without screwing it down) and then pull up and read?

Screw it down, but realistically there's very little difference in the readings between the two methods. It doesn't need to be that accurate anyway.

[flmont]

I would think screwed down tight would give the best reading,.but just add a little at a time untill stick reads full ..Frank