2008 Subaru Forester XT, AutomaticFACTORY OEM SERVICE PROCEDURE

General Information: Specifications: Engine

ENGINE SPECIFICATIONS

Model 2.5 L Non-turbo 2.5 L Turbo
Engine type Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine
Valve system mechanism Method SOHC DOHC
Number of valves Intake 2/Exhaust 2
Bore x stroke mm (in) 99.5 x 79
(3.92x3.11)
Displacement cm3 (cu in) 2,457 (149.94)
Compression ratio 10.0±0.2 8.4±0.2
Ignition order 1 - 3 - 2 - 4
Idling speed [at neutral position on MT, or "P" or "N" position on AT] rpm MT: 650±100
AT: 700±100		 700±100
Maximum output kW (HP)/rpm 129(173)/6,000 172(230)/5,600
Maximum torque N.m (kgf-m, ft-lb)/rpm 226 (23.0, 166)/4,400 319(32.5, 235)/3,600
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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