This is going to sound stupid but..

[THUNDA]

Do manual gearboxs run on the same oil as the engine?

I wanna check my manual gearbox oil but havn't ever done so on a legacy before - and would it be a good idea to empty gearbox oil and put new oil in at high kms?

Also diff oil, what to use for my legacy? i know how to check this

p.s; car is bc5 legacy rs turrrrrbbbboooo

[THUNDA]

also what oil do you guys think i should use? car has high kms

[stira]

No, they run on proper gear oil. Get some shock proof stuff if you plan to hammer it.

[newsuba]

In the real old days cars did use the same grade of oil in engines and gearboxes.

Modern cars use separate grades.

Engine oil is designed with a much shorter service life than gearbox oil.

Best check with a specialist Subaru service provider for specific recommendations.

[Guest boostin]

Your gearbox dipstick and fill plug is on the drivers side of the intercooler.

Factory spec is Castrol Multitrax 75w/90. Takes around 3.5 litres to fill.

[Hailz]

+1 on the multitrax 75/90 I also got reccomended the syntrax 75/90 which castrol make too, castrol EPX 80/90 for the rear diff, got that info from my workshop manual and a Castrol rep

[Guest]

 newsuba said:

In the real old days cars did use the same grade of oil in engines and gearboxes.

Modern cars use separate grades.

motorcycles still use the same oil, however. the engine and tranny are connected.

[THUNDA]

I just put 20w50 in my car, and new oil filter

i was reccomended it due to the car having very high kms

car is running algood, it had about 6litres of oil in it before, the old owner just put new oil in without draining the old stuff out hahahah

it took about 4litres and a bit to fill it back up

anyone think 20w50 is a bit too thick?

[Guest boostin]

 THUNDA said:

I just put 20w50 in my car, and new oil filter

i was reccomended it due to the car having very high kms

car is running algood, it had about 6litres of oil in it before, the old owner just put new oil in without draining the old stuff out hahahah

it took about 4litres and a bit to fill it back up

anyone think 20w50 is a bit too thick?

Nah on one of those old high kays things that will be fine.