Oil filter

[Spark plug]

Silly question, my Lexus doesn't seem to need the plastic bit or what is it for?

[agent_dess]

It allows you to drain oil from the oil filter canister before actually removing the oil filter canister itself.

 

But it probably doesn't apply to your car.

[Texas]

Oil filter on 250 is positioned horizontally so this drain device is not much use!

see here ( from 11:55 mark!)

https://youtu.be/aXkMpwRCc2g

 

[Spark plug]

2 hours ago, agent_dess said:

It allows you to drain oil from the oil filter canister before actually removing the oil filter canister itself.

 

But it probably doesn't apply to your car.

Thanks 

[Texas]

That plastic piece in use here on a vertical mounted filter.