Mitsubishi Diamante
Maintenance specs for 2 variants of the Mitsubishi Diamante — from 1992 to 2004.
1992–1996 Mitsubishi Diamante
3.0L V6 SOHC (6G72) · FWD
175 hp / 185 lb-ft
Transmission
Type4-Speed Automatic
FluidMitsubishi ATF SP-III or Dexron III
Drain & fill4.2 qt
Full capacity8.7 qt
Power Steering
TypeHydraulic
FluidMitsubishi PSF or Dexron II
Capacity16 oz
Fuel
Tank19 gal
TypeRegular 87
Service Intervals
Oil change7,500 mi
Trans service30,000 mi
Coolant flush30,000 mi
Brake fluid24,000 mi
Spark plugs30,000 mi
Timingbelt — replace at 60,000 mi
Air filter30,000 mi
Drive belt60,000 mi
1997–2004 Mitsubishi Diamante
3.5L V6 SOHC (6G74) · FWD
210 hp / 231 lb-ft
Transmission
Type4-Speed Automatic
FluidMitsubishi ATF SP-III or Dexron III
Drain & fill4.2 qt
Full capacity9 qt
Power Steering
TypeHydraulic
FluidMitsubishi PSF or Dexron II
Capacity16 oz
Fuel
Tank19 gal
TypeRegular 87
Service Intervals
Oil change7,500 mi
Trans service30,000 mi
Coolant flush30,000 mi
Brake fluid24,000 mi
Spark plugs30,000 mi
Timingbelt — replace at 60,000 mi
Air filter30,000 mi
Cabin filter15,000 mi
Drive belt60,000 mi