u/Right_Ad_3354

Hi everyone. I am going to attempt to change the rear differential fluid in my 2018 STI. I want to make sure I get the correct fluid. I know the previous owner was using Motul, but it seems there are a few varieties. could anyone recommend the best/proper one? This car is lightly modded and tuned.

The main options I'm seeing are Motul Motyl gear, Motul Gear 300, and Motul Gear 300 LS.

they are all 75W90 fluids. Thanks guys

hi everyone. I’m planning on a multiple mod day at my local shop for my 2018 STI. I’d like to do as many things at once, so I only have to tune it once. here is what the car currently has:

ID 1050cc injectors 

AEM fuel pump 

Cobb SF intake 

Cobb catted downpipe with heatshield 

Cobb stumble kit 

IAG AOS 

Getadom cylinder 4 cooling mod 

dyno tuned on 93.

I was next planning to do a turbo inlet, EL headers, catback exhaust, and a Koyorad radiator . Anything else i should add? I was considering an upgraded TMIC, but not sure if it’s needed. this is essentially a daily driver type car. no track time. I’m not concerned about hp numbers. I want more quickness/power for spirited drives, and honestly weaving in and out of traffic when I need to.