M1 and OEM filter. I use a Fomoto valve so I don't have to replace the crush washer anymore. I just open the valve let it drain and done...

 

i've been thinkin about grabbing that! really useful - i just am a little hesitant to trust it.. silly i know

 

Mobile 1. Oem filter. Cleaning your air filter will get you more measurable hp than switching oils if you go by the most informed opinions.

 

lol i don't think people do it for added hp

 

Aka ask any amsoil dealer.

 

Stock turbo? You don't need special oils if you are on the stock bearing package. Personally, I recommend a baffled oil pan if you want to guarantee that oil starvation won't be an issue. You wouldn't need to switch oils either, just run the same oil you have now.

 

HKS 7460R, which I guess would be even better about oil. and yea, the one from ams or BR is what i've been looking at as a must/want/need to do soon

 

They make a security clip you can put on there. Both me and my GF run them. (knock on wood) no issues on either car. I highly recomend

 

80,000 on my EVO IX GSR. Same crush washer. I run Brad Penn Green Oil, 10W-30 and my fuel efficiency increased by 1 MPG! OEM Filter.

Looks like you really do have a bunch of options to choose from. Most important thing is change your oil and filter regularly!

 

Mobil 1 and OEM filter. Mitsubishi built the car and recommends that stuff for a reason.

 

Amsoil 10w30 and a napa gold filter.