The Subaru Outback has the most extensive engine variety within the Subaru range. Originally released with the EJ25 NA engine, the Outback engine range progressed to include the EZ30/EZ36 H6 engine, the FB25 NA engine and the EE20 Turbo diesel engine.
The SOHC EJ25 engine is widely recognised as having inherent head gasket faults which lead to overheating issues and in turn, premature engine failure. To remedy this, All Drive Subaru has introduced a multi-layer head gasket revision process which eliminates the issue and provides reliability and engine longevity.
In 2000, the Outback received an engine revamp with the introduction of the 3L H6 engine. This flat 6 3L engine was a torque powerhouse; along with 180mm ground clearance and full time AWD, the H6 Outback was instantly recognised as the people hauling wagon to purchase for absolutely everything! The early EZ30 H6 engine was fairly reliable if properly maintained, however did tend to develop head gasket faults and noisy timing chain guides if servicing was conducted religiously. The later model EZ36 had similar faults along with common OCV failures if not properly maintained.
In 2010 the Subaru Outback was released with a new EE20 turbo diesel engine. Finally! A turbo Diesel Subaru! This was a much sought after option that consumers had been waiting for, and it didn’t disappoint! The EE20 brought a whole new element to the Subaru range, presenting a punchy boost curve at low RPM, fantastic fuel economy and tremendous torque perfect for long highway trips or moving around a trailer or caravan. While the EE20 engine is still relatively new, DPF blockages and consequential carbon build ups are recognised as common faults. The engine unit itself is quite reliable and will give in excess of 200,000km service life if properly maintained. Getting your general log book servicing and repairs carried out at All Drive Subaroo will ensure you get maximum life and reliability from your Subaru Outback.
As of 2014, new Subaru Outback models were released with the FB25 engine; this was a big step forward for Subaru as the new FB25 introduced a whole new level of fuel efficiency, reliability and low end torque that was lacking in previous 4 cylinder models. While the FB25 engine is more durable and reliable than its EJ predecessor, it is renowned for oil consumption and oil leak issues.
At All Drive Subaroo, we don’t rebuild EZ, EJ, EE or FB Forester engines to standard specifications as they have several inherent issues we’ve solved through our revision processes. For the permanent fix, we offer our revised head gaskets and our revised block internals, including Low Oil Consumption pistons and rings, in all of our rebuilt engines.
Although the EE20 engine isn’t widely acknowledged as carrying over the same excessive oil consumption faults, we have noticed a developing trend in slight consumption issues and carry out our revision as a preventative procedure.
The EZ H6 engines shared common faults such as oil consumption and inadequate head gaskets, however the later EZ36 engine is also renowned for oil gallery issues associated with the OCV system. These issues can be somewhat avoided with the correct maintenance by a qualified professional.
We offer 3 Levels in standard Outback replacement engines; rebuilt, reconditioned and remanufactured units. All drive Subaroo build the most robust and reliable H6, EJ25, FB25 and EE20 engines in the market today.
One of the key features of our reconditioned engines is our revision process. Over the last 26 years, we’ve established our own remanufacturing techniques to counter factory inherent weaknesses associated with particular models. This means that regardless of the build level, every ADS engine is assembled with our latest superseded parts and assembly procedures.
When deciding which engine is suitable for your application, you can select either a rebuilt, reconditioned or remanufactured engine assembly. The purpose of our 3 separate build levels is to accommodate for every individual budget we can; our basic rebuilt level 1 Forester engine still boasts the same warranty terms as a brand new short block assembly purchased from Subaru.
Whichever build level you choose, it’ll be assembled with the highest quality components and installed by the best technicians in the country.
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