'02 V70 2.4T oil pump o-ring

[mouseskowitz]

I was recently told it is a common problem for the o-ring on the oil pump to fail. I just tuned over 200k miles and have a couple of other things that need to be done. So, I'm wondering, is the o-ring replacement something that is done as a preventative thing or wait until there is a low oil pressure problem? I would like to try to get 300k out of this car.

[jimmy57]

There is an o ring around body of oil pump to act as a backup seal to the gasket between pump and the back of the oil pump bore. The o ring will not cause low oil pressure. The gaskets have no issues I've eve seen. The pick up tube inside pan and the o rings on the tube between oil filter housing and the oil cooler supply holes can leak and give low oil pressure. If the pan comes off those should be replaced.

[mouseskowitz]

So, if I have low oil pressure, which I don't, or need to take the pan off for another reason, replace them, but if not don't worry until there is an issue?