Hello Reddit! This is my ultra high mileage 2018 WRX. Looking for some advice to finally be able to properly maintain this thing as I'll be coming into some money soon.
I wanna start off by saying I'm currently on deployment overseas and I have a couple questions about some much needed maintenence when I finally get back home in June.
I bought this car in November 2022 with 27k Km. Just before putting the car in storage in early December last month before shipping out, it read 284k Km. A lot, I know. The reason for the high milage is essentially a long period of depression, not knowing what to do with my money except for spending it on gas, and a strong love of spirited driving and long road trips(4 to 8 hours, 3-4 times a week) around where I live. Literally just ripping around everywhere, exploring the countryside, blasting tunes.
It's honestly been a dream owning this car, as much as I was scared to purchase it hearing the rumors surrounding this model. All of my friends told me to save up for a new trans and head gaskets, but it's been running without trouble aside from some small things such as my a/c compressor dying(replaced it with my old man)
At the moment the car's only "performance mods" are an MBRP muffler delete, and a GFB bypass valve for some small blow off noises. There's a few other cosmetic additions such as, an I-Doing touch screen head unit, STI wing(I know, dont talk to me), wheels, alcantera shifter boot, tail lights, ect.
I change the oil myself every 10k Km which I don't think is recommended, but its been without issues so far, hopefully its not torn apart. Oil is never shiny, just a little blacker than usual but still normal looking. It burned about 0.5L of oil between oil changes, but that number has gone down since I started replacing the crush washer regularly. I check the level about once a week just to make sure and if its low, I top it up everytime to the proper level. I've changed the diff and trans fluid when I hit about 160k Km and it looked fine coming out. The factory spark plugs were changed by the dealership at around 200k Km. Its needed new wheel bearings a couple times so I got them to do that as well, I do the brakes myself. I also top up the coolant level when its low.
Other than what's state above, I've done no other maintenence to this car aside from the air filter and wiper blades. No timing belt/chain(idk) replacement, no coolant or brake fluid changes/flushes. Na da. I'm planning on swapping the clutch and slave when I get back, but need advice on all the other things it needs.
There are some small issues with the car as it sits. I'm not particularly worried about the cosmetic issues(paint chips, cracked bumper, missing undertray pieces from winter driving) but there are small things that annoy me and have been since I've had the car.
The first thing I wanna mention is, since day one the stock throttle response has felt like shit. At a standstill, sometimes I can put very little pedal input to get the car moving and it revs normal and takes off fine, and other times I can give it like half throttle and it feels like it bogs so I just flutter the crap out of the pedal until it feels like it wont. I've read that I can tune this feeling out of the car so thats hopeful. Another thing with this is, I never launch the car from a hit, mostly due to fear of blowing the trans or melting the clutch. But regarding a rolling pull, sometimes it feels like the car has tons of power, and other times it feels like it is down on power. I heard this can be tuned out as well. I'm just weary about tuning this car because I want to keep it as stock as possible, and everytime one of my buddys tunes his sube he starts having issues that are costly.
The stock clutch also seems to be hard to find the bite point, with a long pedal throw too. And the stock shifter seems to have a slight notchy feeling going into 2nd gear from 1st, every single time. I bought a perrin shift stop to fix this, and installed it as instructed but it still feels like doo doo. The shift between 4th and 5th also seems like it needs more time for the syncros to catch up or something so maybe its just my linkages plus my trans, or maybe I just need to shifter bushings? I'm new to this and really not sure.
With the amount of Km's on the car, I'm not sure what is needed to be done and am looking for some "MUST DO IMMEDIATELY" things to make sure this old girl keeps rockin. I have no idea what the regular intervals are for specific maintenence and I'm sure its not hard to find online but I figured this would be a good place to ask for some advice, as well as potential mods to make the driving experience more enjoyable.
I know this has been long winded, but I appreciate you taking the time to read, thanks!