Lexus GX, J120 (USA / CAN)

Differential fluid capacity & service interval

Lexus GX, J120 (USA / CAN) differential fluid capacity ranges from 1,4 to 3,1 liters. Service intervals include checks at 16000 km, 15000 miles/ 12 months, and 15000 miles/ 18 months, with changes at 32000 km, 64000 km, 15000 miles/ 12 months, and 15000 miles/ 18 months. The data covers 16 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • GX 470 (CAN), UZJ120 (2006-2009)
  • Front
  • Use: Normal
  • Capacity 1,4 liter
  • Check 16000 km
  • Change 64000 km
  • GX 470 (CAN), UZJ120 (2006-2009)
  • Rear
  • Use: Normal
  • Capacity 3,1 liter
  • Check 16000 km
  • Change 64000 km
  • GX 470 (USA), UZJ120 (2006-2009)
  • Front
  • Use: Normal
  • Capacity 1,4 liter
  • Check 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2006-2009)
  • Front
  • Use: Severe
  • Capacity 1,4 liter
  • Change 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2006-2009)
  • Rear
  • Use: Normal
  • Capacity 3,1 liter
  • Check 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2006-2009)
  • Rear
  • Use: Severe
  • Capacity 3,1 liter
  • Change 15000 miles/ 18 months
  • GX 470 (CAN), UZJ120 (2004-2005)
  • Front
  • Use: Normal
  • Capacity 1,4 liter
  • Check 16000 km
  • Change 32000 km
  • GX 470 (CAN), UZJ120 (2004-2005)
  • Rear
  • Use: Normal
  • Capacity 3,1 liter
  • Check 16000 km
  • Change 32000 km
  • GX 470 (USA), UZJ120 (2004-2005)
  • Front
  • Use: Normal
  • Capacity 1,4 liter
  • Check 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2004-2005)
  • Front
  • Use: Severe
  • Capacity 1,4 liter
  • Change 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2004-2005)
  • Rear
  • Use: Normal
  • Capacity 3,1 liter
  • Check 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2004-2005)
  • Rear
  • Use: Severe
  • Capacity 3,1 liter
  • Change 15000 miles/ 18 months
  • GX 470 (USA), UZJ120 (2003-2003)
  • Front
  • Use: Normal
  • Capacity 1,4 liter
  • Check 15000 miles/ 12 months
  • GX 470 (USA), UZJ120 (2003-2003)
  • Front
  • Use: Severe
  • Capacity 1,4 liter
  • Change 15000 miles/ 12 months
  • GX 470 (USA), UZJ120 (2003-2003)
  • Rear
  • Use: Normal
  • Capacity 3,1 liter
  • Check 15000 miles/ 12 months
  • GX 470 (USA), UZJ120 (2003-2003)
  • Rear
  • Use: Severe
  • Capacity 3,1 liter
  • Change 15000 miles/ 12 months

Additional Notes

  • The Lexus GX 470 (UZJ120) front differential holds 1.4 liters across all model years and markets covered in the specifications, while the rear differential holds 3.1 liters, reflecting the larger housing and gear set typical of a rear axle unit on a body-on-frame SUV.
  • For the Canadian-market GX 470 (2004-2005), both front and rear differentials share a change interval of 32,000 km under normal use conditions, with a check interval of 16,000 km applying to both axles.
  • Canadian-market units from 2006-2009 retain the same 16,000 km check interval as the 2004-2005 models, but the change interval doubles to 64,000 km for both front and rear differentials under normal use.
  • The 2003 USA-market GX 470 specifies a check interval of 15,000 miles or 12 months for both differentials under normal use, while the same 15,000-mile or 12-month mark becomes a change interval under severe use conditions.
  • From the 2004-2005 USA-market specifications onward, the time component of the interval extends from 12 months to 18 months, while the mileage threshold of 15,000 miles remains unchanged for both normal and severe use across front and rear differentials.
  • For USA-market units covering 2004-2005 and 2006-2009, the severe use condition ties the 15,000-mile or 18-month mark directly to a fluid change rather than an inspection, distinguishing it from the normal use schedule where the same interval triggers only a check.
  • The rear differential capacity of 3.1 liters is more than twice the front differential capacity of 1.4 liters, a difference consistent with the greater torque-handling demands and physical size of a solid rear axle differential compared to a front independent differential unit.
  • USA-market specifications for 2006-2009 carry identical interval values to the 2004-2005 USA-market entries, with 15,000 miles or 18 months applying to both the normal-use check and the severe-use change for both axles.

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