joz8968

iTrader: (13)

Mr Mainwaring.

APIDavid

iTrader: (4)

I know the handbook advises 0W30 or 5W30 BUT in our experience the Subaru turbo engine doesn't like either and we recommend the lower figure to never be less than 10W Ideally we use 15W40 and we stick with that.

I suspect that the lower grade of 0Wor 5W might be influenced by the relative lack of friction that it creates [ for a while until the engine wears ] so as to comply with fuel consumption regs that seem to drive the sales pitch. Better mpg is directly related to the grade of oil in the engine, until it goes bang.

I know that many, many manufacturers use and recommend similar grades to 0W and 5W but the Subaru flat four seems to create a case all of its own [ for higher viscosity ] due to whatever forces are in control within that type of engine.

David

Don Clark

Not seen it posted on here.................

http://bigstory.ap.org/article/subar...s-auto-defects

Littleted

And now it starts, worries me where they claim 2014 subarus same engine

salsa-king

no mention of the 2006-on 2.5 STi engines.

Carnut

, BMW and VW ranked in the bottom 10 of a study into engine reliability

German-made cars are not as reliable as many believe, according to new research. Warranty Direct has studied its claims data to compile a list of the manufacturers with the most reliable engines - and*Audi,*BMW*and*Volkswagen*all finished in the bottom 10 out of a total 36 makers.In fact, the only firm whose cars had a worse engine failure rate than Audi was MG Rover.*MINI*wasn’t much better, finishing third from bottom, while its parent company BMW came seventh from bottom. And, despite its reputation for rock-solid reliability,*Volkswagen*came ninth from bottom.Honda*scooped the gold medal – the study found that just one in every 344 Honda engines failed, compared to one in every 27 Audi engines. Despite its recent recall woes,*Toyota*came second and*Mercedes*managed to outperform its fellow German brands with a respectable third-place finish.Duncan McClure, Warranty Direct Managing Director, said that engine failures are the worst for motorists as they’re the repairs that can lead to the highest costs because of the parts and hours of labour required to fix them: “The nuber of failures may be low compared to areas such as axle and suspension damage but engine repairs almost always result in costs reaching the thousands for motorists who aren’t covered by a warranty.”An engine failure on a*Range Rover*Vogue recently led to Warranty Direct’s highest ever claim of £13,000.

In 2011, a class action lawsuit was filed in United States District Court in New Jersey against Daimler AG, Mercedes-Benz, Mercedes-AMG for alleged defects in the M156 engine contained in AMG vehicles built in 2007-2011 model years leading to premature wear. The plaintiff claimed the combination of cast nodular iron camshafts and 9310 grade steel valve lifters contributed to the premature wear, but the defendants had known about the defect since 2007.[2]

http://www.pswlaw.com/Notable-Cases/...ss-Action.aspx

Honda being the most reliable engine manufacturer has 1 in 344 engine failures.

mickp

iTrader: (1)

If they could only all build like Honda.

PODWRX2

What are the parameters used as for when the engine fails (mileage, age??). Even 1 in 344 seems very high as i thought the VTEC was indestructable! Surely if the VAG engines were failing as regularly as the stats indicate there would be golfs, polos and A's littering the roads everywhere?

T5NYW

iTrader: (4)

Full explanation of my engine failure in general. It's hard reading but hay ho

https://www.scoobynet.com/scoobynet-...e-failure.html

kershaw-330s

so reading this what oil would you guys reconmend for my 330s currently i think ive got a shell 5-50 going in i always belived the higher the second number the better and to have the biggest rang cos bmw m cars use a 15-60 a verry special expencive oil should i be usingsomthing luike that ???

APIDavid

iTrader: (4)

See my post #1592

w60 is too thick.

David APi

The Trooper 1815

iTrader: (31)

http://forums.nasioc.com/forums/show....php?t=2649236

A proposed class-action lawsuit contends Subaru of America failed to tell consumers about an oil-consumption problem in its most popular models.

The suit claims the vehicles "prematurely burn off and/or consume abnormal and excessive amounts of engine oil" and alleges Cherry Hill-based Subaru has refused to fix the problem, saddling some customers with steep repair bills.

The suit seeks to represent buyers of 2011-14 Foresters, the 2013 Legacy and 2013 Outback, all with 2.5-liter "Boxer" engines; and the 2012-13 Impreza and 2013 Crosstrek, with 2-liter "Boxer" engines.

It says customers would not have bought the Subaru vehicles "or would have paid substantially less for them" if they'd known of the defect. Customers also have to "constantly replenish (and pay for) engine oil ... at an unreasonably rapid pace."

It said some customers have paid $8,000 to Subaru dealers to repair the oil problem, and that drivers also face expenses for related problems, such as damage to vehicles' oxygen sensors, catalytic converters and sparkplugs.

The suit also asserts the alleged problem is a safety hazard, because engines potentially could fail "at any time and under any driving condition or speed." It cites no instances of injuries or accidents due to oil issue.

The suit, filed Wednesday in federal court in Camden, also names Subaru's parent company, Fuji Heavy Industries Ltd. of Tokyo.

A Subaru spokesman said the firm is aware of the lawsuit.

"While we believe the oil consumption of our vehicles to be within acceptable levels, we continually work to reduce the amount of consumable goods, such as oil, that our vehicles require to operate," said company spokesman Michael McHale.

"We have also worked with customers on this issue," he said in a statement.

The suit was filed on behalf of Keith Yaeger, a California man who owns a 2014 Forester, and Michael Schuler, a Florida man who says he traded in his 2013 Outback at a loss due to the oil problem.

"Following an extensive investigation, we now look forward to litigating the case," said Matthew Schelkopf, a Haverford, Pennsylvania, attorney for the Subaru owners.

The lawsuit includes copies of complaints by Subaru owners to federal safety agencies. "The Internet is replete with examples of blogs and other websites where consumers have complained of the exact same oil consumption defect within the class (of) vehicles," it adds.

The suit says Subaru in September and December 2013 issued four "technical service bulletins" alerting dealers to complaints of excessive engine oil consumption. It says the company issued revised versions of those bulletins in May of this year.

The bulletins allegedly said the Subaru models "were experiencing abnormally high levels of engine oil consumption that warranted an intricate repair process to properly remedy," and identified "unanticipated wear of the oil control piston rings as the root cause of the oil consumption defect," the lawsuit added.

Based on the timing of the initial bulletins, the suit says, "Subaru both acknowledged the oil consumption defect and suggested a repair ... while all, or nearly all, of the (affected models) should still be covered under Subaru's powertrain warranty."

Don Clark

Only a month late - see posts #1593 0nwards

mickp

iTrader: (1)

Unfortunately the penny will never drop with some. These engines are seriously flawed. It's a global farce that Subaru have got away with ducking and diving for over 6 years.

Move on guys. Don't hand over any more of your hard earned to Subaru, they don't deserve it.

lordharding

iTrader: (1)

Got to agree with that statement
When you spend 26-35k in a car you don't expect the engine to go pop after 11k -45k miles

End of discussion

The Trooper 1815

iTrader: (31)

As Scoobynet is not as popular I rarely bother now, so sorry for the lateness .

NormantheDog

Too many pages to read but have many 330s' gone pop?

urban

iTrader: (1)

No idea to be honest.
But the one I had went bang on the new owner and I sold it with just over 20K on the clock.
It had been 'using' oil prior to me departing company with it.

NormantheDog

Thanks for the reply, so yours was a 330s? From bits I have read 2009 were more prone and the 330s' were around 2009.

kev m

My 330S had engine failure @ 18 months old and 29,000 on the clock

urban

iTrader: (1)

Yeah, 330S.
Purchased new in March 2010.

GSM21

What years of car is this problem affecting? I am just debating about getting a impreza again, last one we had was a P1 about 10 years ago, since then I have lost track with the impreza development, reliability and specific faults.

So thought I would just ask before I go any further down the purchasing line, I would be looking about 2006/2008 cars with my budget.

Cheers

thenewgalaxy

Anything with a 2.5 turbo engine, particularly the STI variants.

These were available as Hawkeye models and onwards in the UK. Both hawkeye Imprezas and Hatches are good cars but there have been faults with the engines.

The advice is basically:

1. Buy with your eyes wide open and anticipate a problem, the solution is as any of the engine builders on here will tell you (forged internals).

2. Buy a car that's already forged (or factor a forged build into your budget)

or 3. Find a JDM car with a 2.0 engine, these are more reliable.

You could always consider buying something else.

P1s, as I recall, had a propensity towards going bang as well.

APIDavid

iTrader: (4)

As he says.

urban

iTrader: (1)

i.e read as the 2.5 engine is a bag of shyte!

honeybadger

Hi guys

What do you know about the 2.5 engine in the new (released Jul 2014) STi ? Are the pistons still made of Doritos?

APIDavid

iTrader: (4)

Not sure that anyone over here has got that far yet. Kevin the owner of Scoobyclinic has one but whether he has done anything with the engine internally I do not know.

I have not yet heard of one failing through the usual channels of dealer talk. BUT sense says that the pistons MUST have been upgraded, as it has caused so many problems to IM in warranty and bad feeling. They'd be mad thinking and hoping that it cures itself.

Maybe a simple reprogramme of the ecu to cure the fuelling issue that they must have, causing cracked ring lands on cylinders 2 & 4, is one solution.

Watch this space no doubt someone will call in with a story.

David

honeybadger

haha. ja, let's see, David

I suspect they have altered the ECU. In a road test here they moaned the car couldn't match the previous car's 0-100 km/h time. And it felt 'sluggish' I believe. They took it back to the dealer and the dealer reset the ECU, and then they were able to attain the same time.

I think the engine was detonating during the test and the timing retarded. BUT the difference now is, that with the new model, it keeps the timing down and the boost, and hence the performance suffers. In the previous cars, the power was cut only for a while. On my hatchback i could see the detonation on the power graph. The ECU cut power for for 500 rpm. ie : from 5500rpm to 6000rpm. Then it went right back to full power.
That's why the engines break so much here, it's detonating all the time on the 95 RON octane.

Anyway, so I think Subaru has set the ECU bring down the power and keep it down on the new ones (like the German cars do) , when it detonates.

thenewgalaxy

David (or anyone else who builds these things for a living), one thing I struggle to understand is that the pistons in the 2.5 are made of the same material as those in the 2.0 cars post-2003.

I've got a friend who absolutely spanked the **** off one of these engines for several years, tracked it and all sorts - and it was pushing out over 450bhp.

I've also seen and heard of so many of these 2.0 cars "in the wrong hands" with decats and cone air filters, ones thrashed from cold and run on 95 RON - you name it. They keep going.

I don't worry too much about mine as it was built by Cosworth and would expect it to be okay for that, time will tell. But it all seems a bit unnecessary to throw so many expensive and supposedly high-tolerance bits at an engine to achieve 400/400 when a remap and turbo is sometimes enough on the older cars, albeit very "reliably" too.

I understand that with the 2.5s the head gaskets might not be up to the job or bolted down hard enough and that the map may cause issues with det or whatever, but surely there is something else responsible for the pistons breaking?

What I'm basically asking is, do you think that solving the problem could be as simple as changing the way the engine is assembled without altering any internals? Or is there some fundamental issue with the shape or structure of the engine that requires new bits?

Seahound007

Just remember no one comes on this site & says had a drive around today and car was fine.
Also no one says my engine blew up today. Maybe it was that dodgy remap I had done / petrol I bought from the local garage that hasn't had a petrol delivery since 1957/cheap non spec oil I used/or I had been thrashing it round a track for 27 hours just before it blew up.