CriticalCommonEngine

Subaru Forester: XT turbo oil starvation — clogged banjo bolt filter screen

XT turbo oil starvation — clogged banjo bolt filter screen is a common engine fault on the Subaru Forester on the 2003–2013 cars, and we rate it critical. Putting it right costs $2,500 to $6,000 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 50 documented faults on the Subaru Forester.

Vehicle: Subaru Forester
Engine: 2.5L
Years: 2003–2013
Fuel: petrol
System: Engine

This page covers the Subaru Forester as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Subaru Forester faults50 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Turbocharger yet. We would rather show none than show a picture of a different part.

What goes wrong

Turbo Forester XTs (SG EJ255, SH EJ255 — including JDM Cross Sports) have a tiny mesh filter screen inside the banjo bolt feeding oil to the turbo. If oil changes are stretched, the screen clogs with sludge, starves the turbo, and the turbo shaft seizes or snaps — often sending debris through the engine. Subaru used these screens up to around MY2013 and issued a service bulletin on inspecting/removing them; most Subaru specialists in NZ remove the screen outright at a service. A dead turbo alone is a $2,500+ job; if debris enters the engine it can total it.

What you would notice

Whining or grinding from the turbo
Loss of boost/power
Blue smoke from the exhaust under load
Oil warning light flicker at idle when hot

How to check it

Where to look. Oil feed line to the turbocharger, top rear of the engine on the intake tract

Ask specifically whether the banjo bolt filter screens have been removed — a Subaru-savvy owner will know exactly what you mean, and blank looks are a red flag.
Check oil change intervals in the service book (should be 10,000 km or less with quality oil).
On the drive, listen for turbo whine and confirm boost builds smoothly.
Pull the oil filler cap and check for sludge under it.

Parts involved: Turbocharger.

What it costs to put right

$2,500 to $6,000 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Have the turbo oil-feed banjo filter screens been removed or inspected?”
“What oil and interval has it been serviced on?”
“Has the turbo ever been replaced?”

Now check the Subaru Forester you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

subaruforester.org 'What's your take on the oil supply screen in the banjo bolt?'
subaruoutback.org 'Turbo Failure (clogged Banjo Bolt Filter)'
Ultimate Subaru Message Board 'Banjo Bolt Filter HELL'
1A Auto 'Subaru Turbo Problems: Is Your Turbo on Borrowed Time?'

Subaru Forester buyer questions

Is xt turbo oil starvation — clogged banjo bolt filter screen serious on a Subaru Forester?

We rate it critical and common on the Subaru Forester. Turbo Forester XTs (SG EJ255, SH EJ255 — including JDM Cross Sports) have a tiny mesh filter screen inside the banjo bolt feeding oil to the turbo. If oil changes are stretched, the screen clogs with sludge, starves the turbo, and the turbo shaft seizes or snaps — often sending debris through the engine. Subaru used these screens up to around MY2013 and issued a service bulletin on inspecting/removing them; most Subaru specialists in NZ remove the screen outright at a service. A dead turbo alone is a $2,500+ job; if debris enters the engine it can total it.

How much does it cost to fix on a Subaru Forester?

$2,500 to $6,000 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Subaru Forester years are affected?

Our research records this fault on the 2003–2013 Subaru Forester. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Ask specifically whether the banjo bolt filter screens have been removed — a Subaru-savvy owner will know exactly what you mean, and blank looks are a red flag. Check oil change intervals in the service book (should be 10,000 km or less with quality oil). On the drive, listen for turbo whine and confirm boost builds smoothly. Pull the oil filler cap and check for sludge under it. Look here: Oil feed line to the turbocharger, top rear of the engine on the intake tract