Subaru has published Service Bulletin # 02-103-07

[Guest]

hi all, we were ordering a AMSOIL oil filter for a customer and came across this, thought it might interest v10 imprezza owners.

Subaru has published Service Bulletin # 02-103-07 that identifies a factory design related problem with premature clogging of the oil mesh screen located inside the oiling system that supplies the turbo charger on all model turbo charged cars. A clogged screen will result in oil starvation and turbo charger failure. Subaru has reduced their recommended oil drain interval in half, as a solution, from 7,500 miles to 3,750 miles (3-3/4 months) and requires the oil mesh screen to be inspected, and possibly serviced, at every oil change. With this Subaru factory related design issue, AMSOIL INC. therefore must recommend customers follow the new Subaru oil change interval of 3,750 miles or 3-3/4 months until Subaru resolves this issue

[Guest]

This has been an issue in Legacy MY-03 onwards

Infact all turbo and VVT have these filter baskets - they became a regular service check

[Russki]

Thanks very much, can I ask where exactly that mesh is located?

[Guest]

Inside the banjo bolts for the oil feeds to turbo from cyl head and in the VVT banjo bolts at VVT valve

Remove and discard !

If the ol filter can't clean the oil good enough at 100micron then a mesh basket at 5 micron wont stop contanination

[boon]

Damn, so I'm meant to check these every service? What a pain in the ass ;/

EDIT: Hold on, so I can just pull them out and not replace them because the oil filter is doing the same job anyway?

[Guest]

from what we understand, changing the oil early as specified in the bulletin is good enough, we did ask about checking the turbo filter every time but a Subaru tech said the early changing was enough.

I personally would check it though. but we tend to be over cautious and error on the side of caution.

[Guest]

 boon said:

Damn, so I'm meant to check these every service? What a pain in the ass ;/

EDIT: Hold on, so I can just pull them out and not replace them because the oil filter is doing the same job anyway?

Correct

All VVT problems I have seen have been caused by the filter basket collapsing and falling into the VVT valve

[turborunner]

is this only for the 2000+ wrx's or do the early 96 wrx have those aswell?

[Timmah]

 turborunner said:

is this only one the 2000+ wrx's or do the early 96 wrx have those aswell?

Second this. Am curious.

[Ryan]

Does the same apply to V8 2003?

[boon]

Presumably, if it's AVCS it'll have these in the banjo fittings.

[Guest]

 boon said:

Presumably, if it's AVCS it'll have these in the banjo fittings.

correct