2020 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Engine Lubrication System: General Description: Specification

Lubrication method Forced lubrication type
Oil pump Pump type Trochoid type
Β  Number of teeth pcs. Inner rotor 10
Outer rotor 11
Outer rotor diameter x Thickness mm (in) 71.4x 14 (2.81x0.55)
Performance (Oil temperature 120Β°C (248Β°F)) 600 r/min Discharge pressure kPa (kg/cm2 , psi) 34 (0.3, 4.9)
Discharge rate L (US qt, Imp qt)/min 5.8 (6.1, 5.1) or more
6, 000 r/min Discharge pressure kPa (kg/cm2 , psi) 298 (3.0, 43.2)
Discharge rate L (US qt, Imp qt)/min 46.6 (49.3, 41.0) or more
Relief valve working pressure (2-step relief) 1st opening pressure kPa (kg/cm2 , psi) 150 (1.5, 21.7)
Main opening pressure kPa (kg/cm2 , psi) 700 (7.1, 101.5)
Oil filter Filter type Full-flow filter type
Filtration area cm2 (sq in) 1, 100 (171)
By-pass valve opening pressure kPa (kg/cm2 , psi) 160 (1.6, 23.2)
Outer diameter x Width mm (in) 68 x 85 (2.68x3.35)
Installation screw specifications M 20x1.5
Oil pressure switch Type Immersed contact point type
Operating voltage V 12
Warning light operating pressure kPa (kg/cm2 , psi) 14.7 (0.1, 2.1)
Proof pressure kPa (kg/cm2 , psi) 981 (10.0, 142.2)
Engine oil Total capacity (at overhaul) L (US qt, Imp qt) 5.1 (5.4, 4.5)
When replacing engine oil and oil filter L (US qt, Imp qt) 4.2 (4.4, 3.7)
When replacing engine oil only L (US qt, Imp qt) 4.0 (4.2, 3.5)

Engine oil:Β 

Refer to RECOMMENDED MATERIALS>GREASE .

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

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

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