Does anyone know what type of oil is best for the gearbox and diff on an IS200 Sport? Semi Synthetic or Synthetic? Is it the same for oil for both gearbox & diff or different?

I've used Castrol Syntrax in my previous car (Impreza Turbo) and found it very good. Would this be OK for the IS200?

Cheers

Gavin

This is what the manual says...

Manual transmission:
Oil capacity = 1.9L (2.0 qt., 1.7Imp.qt.)
Oil type = Multipurpose gear oil API GL-4 or GL-5
Recommended oil viscosity = SAE 75W-90

Differential:
Oil type = Hypoid gear oil API GL-5
Oil viscosity = SAE 90 (above -18deg.) SAE 80W or SAE 80W-90 (below -18deg.)

The service manual makes no mention of changing the gearbox oil (though it should be inspected every 4 years / 40,000 miles).

The differential oil should be replaced every 20,000 miles / 2 years. I was told by the dealer that they used Castrol Syntrax SAE 75W-90. This doesn't quite match up with the specification in the manual but, since I couldn't find anything that did match exactly, it's what I used.

Be aware that the differential takes approximately 1100ml of oil so if you buy it in 1 litre bottles you will need two.

Cheers, do u know if it matters if the oil is synthetic or semi synthetic?

Doesn't have to be either. If you wish to spend the extra on synthetic then you will get the best protection and performance but unless you are using the car on a track it may not be worth it?

I have heard Redline transmission and diff oils are good. Can be shifting more slick.

As you have the sport your diff contains a LSD. Some types of LSDs cannot be used with certain oils as they need a certain amount of friction, so I would double check that the oil you select is compatible.

Mobil 1 SHC 75/90 fully synthetic is a really good gear oil.
I've used it in competition gearboxes and my IS and it's excellent.

franmac

Does anyone know of a thread thats gives you a step by step on changing it?

Its simple mate, no need for a guide.

-You need the car up on a lift.

-Remove the bottom drain plug and drain the old oil out.

-When it has all drained out, clean the plug throughly to remove any metail grindings from the magnetic bit. You may also want to fit a new washer to it as well.

-Reinsert the drain plug and remove the filling plug.

-Pour the new oil into the filling hole until it starts to overflow and run out. You will need to use one of those bottles with the long tube at the top.

-Replace the filling plug.

Job done, simple as that!

Hope that helps

Gavin

i got my oils from halfords,i use castrol.they had the same spec

I think it's worth to use fully synthetic then you will get the best protection and performance.

75w-90 fully synthetic is the best option for quality and life.

One like this will do both box and diff as it's a GL4/GL5

http://www.opieoils.co.uk/TechSpecs/SILKTR...204%20Wheel.pdf

Cheers
Simon

The diff on the sport Does require a specific oil