[ECSTuning]

I've seen darker but it's never comforting. The oil is going to break down over time and will blacken quickly thanks to the extra heat from the turbos. I do my oil changes between 3k and 5k, typically the oil comes out dark for me without being too nasty.

ECS Tuning

[AlpineE90335i]

Originally Posted by ECSTuning

I've seen darker but it's never comforting. The oil is going to break down over time and will blacken quickly thanks to the extra heat from the turbos. I do my oil changes between 3k and 5k, typically the oil comes out dark for me without being too nasty.

ECS Tuning

Off topic, but i see your sig has fumto vales. I have one for my e36 m3. Can I use that same one for my e90 335i?

[AlpineE90335i]

Originally Posted by mdyaman

I drive an M5 so I use the BMW stated Castrol 10W-60

Yea, I saw your sig. I want one , Castrol is a good oil

[ECSTuning]

Originally Posted by AlpineE90335i

Off topic, but i see your sig has fumto vales. I have one for my e36 m3. Can I use that same one for my e90 335i?

As long as you have the same one we have HERE for the S50/S52 M3 then it will also work on the E90 335. The Fumoto 12mm Oil Drain Valve is compatible with a multitude of BMWs.

ECS Tuning

[AlpineE90335i]

I dug up the valve, it is f109 m12-1.5 drain valve w/ adapter 12mm-1.5. It looks just like yours but it doesnt have the part to connect the hose to it.