Time of the Month Fluid changes
 

I'm sitting on 51k at this moment, need to oil change in a couple days. Can someone tell me exactly how much fluid I need to buy for each of the changes I need.. and tell me if I am missing any fluid changes I need to do.
From what I know my previous owner didn't do any of the service maintenance past 25k miles.
As far as I know so far (because I'm a car dummy)...

I need to change the following
Engine Oil, and filter - I'm using Royal Purple and Genuine Subaru filter. (I don't know the part number for the filter but I am generally assuming if it fits a brz it will fit my car.)

Trans / Differential oil , capacity is sitting no 2.2L and 1.1L respectively if I remember....

The real question for me is that noone has a guide on how to switch fluids for an Automatic car as I have an auto for daily driving. Can someone please help me on what fluids I need to change for this car, how much I need?

5.5 quarts of oil. And a filter, obviously. If you're using the OEM drain plug you'll need a new crush washer, but they're pretty good about including one.

The 2.2L number is for manual transmissions. Get an automatic serviced by a dealer or mechanic. It's not as simple as changing fluids on a manual.

Diff is 1.3L. You'll need new crush washers for the drain and fill plugs as well.

Have you done brake fluid? That's supposed to be every 30K miles.


DIY for manual trans/diff fluid changes, with torque values.
http://www.ft86club.com/forums/showthread.php?t=19218

yeah the automatic trans fluid was really different from what I heard. that's where this confusion came in. Thank you for clarifying it to the point. lol

I changed pumped old brake fluid, mixed with new, and drained that 5-6 times and switched it. It's clear yellow/gold.

Also, I wanted to get Motul Gear 300 for Trans and Diff fluid... However I read online that automatic cars don't use gear fluid. which one would I be looking at? I don't know what's what lmfao

Motul 300 or 300LS is great for the diff, but not the transmission. You need automatic transmission fluid, which is completely different.

Which one should I use for my transmission... Don't mind spending a bit of money on it as it's more important to the life of my car hahah

OEM fluid works perfectly fine for everyday driving.

IS OEM regarding Subaru's oem or Toyota's OEM. I drive a FRS, I know they are the same engine but I have a feeling Toyota uses something a little different.

Go with what make you have, so in this case, Toyota.

DISCLAIMER: I have zero experience with the FRS/BRZ auto transmission.

If you car is automatic, it would probably be worth it to have the dealer do the fluid exchange on the transmission. Most modern automatics don't have a drain plug for trans fluid, and if they do, you're only going to get 20-40% of the old fluid out. Generally auto transmission fluid exchanges are done with a special machine that attaches in-line with your cooler hoses and will remove old fluid and replace with new while the vehicle is running on a lift.

yeah, I have a mechanic for that, I most definitely won't be draining auto trans as I heard it's a literal bitch. xD but I won't be taking it to a dealer lol

You will likely want to use Motul 300LS or something with an LSD additive for the rear differential. I use Motul 300V for my manual trans and Redline 75w90 LSD in the rear. 75w85 is also acceptable according to the UM but I can never find it on shelves. I forget exactly what the science is and where I've read it but I know that the additive packages for LSDs are different due to the mechanics, and it's important.

Also the stock fluids in the differential suck, and you'll want to replace them at least every 20-25k if you drive it hard, more often if tracked, although after 20k based purely on how it looked while draining last week alone. But the magnet was sludgy enough I'm glad I changed it just shy of 20k.

Also if you look up UAs on Royal Purple you may want to shorten your oil change interval. It shears faster than other synthetics. I'm running it myself right now because I got it dirt cheap and tax free but I change it at 5k-ish

Edit: for refrence, RE: Royal Purple:
http://forums.nasioc.com/forums/show....php?t=1302957
http://forums.nasioc.com/forums/show....php?t=1238027
http://forums.nasioc.com/forums/show...referrerid=767
http://www.bobistheoilguy.com/forums...&Number=894114

There are people who swear by it. I've used plenty of it myself without issue, not running OAs, though (though I plan on starting soon). However especially in forced induction applications and even without, there are an awful lot of OAs that indicate either that they aren't consistent or that at best, they aren't worth what they're charging.

If you can find it at a bargain and considering you're running an automatic, I wouldn't worry about it too much. But I would be wary, especially in a dusty hot climate and for performance driving applications.

Disregard the 300LS suggestion. It's good, but not better or worse than regular gear 300v gear oil since the lsd is a torsen. Additive not required