torque spec for replacement engine oil

[ahcash]

oh my question is.. not how u drain the oil... it's after u drain. does it matter to tighten the bolt to the recommended torque spec?? coz from wat i see, mechanics just tighten the bolt with normal wrench without measuring the torque spec

Ahh.. sorry Jazzle.. was a bit off the track talking about the other oil drain valve..

I have the same question.. Just wondering what will happen if the recommended torque spec is not followed.. will the car run slower, will it damage the engine? I don't think so, my guess is the spec is to prevent the oil from leaking.. When I did my own oil change, I just tighten it (hard) and check for any oil leak after a few runs.. That's just me!

[Andys]

If you undertighten, you might leak oil.

If you overtighten, you might break the bolt or worse, the thread in the sump.

The washer is designed to be crushed slightly, so here's what to do: Keep doing it up until you feel it get suddenly harder, then do one more quarter turn with your wrench, and thats it.

- Andrew