First-gen Database

From Diamante Owners Group

First-gen Diamante Maintenance Parts/Fluids/etc.
North American / JDM 3.0 Liter Trims
Battery Group Size 24

Minimum CCA: 490
Group Size 34 and 25 should also work in a pinch.

Oil Ambient temps over 100° F: 10W-30

All Others: 5W-30
Appx. 4.5 quarts w/filter
High quality oil only: Mobil 1 recommended.
I better not see any Amazon Basics oil in your Diamantes!

Oil Drain Plug Torque 40 Nm (29 ft-lbs)
Oil Filter Filter: WIX 51334XP or failing that Mitsubishi MD136790 or MZ690116

Screw on by hand, after the O-ring makes contact tighten it another 3/4 turns with a filter wrench.
Torque: 14 Nm (11 ft-lbs)

Engine Air Filter WIX 46057
Spark Plugs NGK 6741 Laser Iridium or NGK 3764 Iridium IX or NGK 2743 PFR6J-11 (DOHC)

NGK 3903 Iridium IX or NGK 7133 BPR6ES-11 (SOHC)
Gap: 1.0-1.1 mm (.039-0.043 in) - Do not adjust gap on platinum plugs!
Torque: 25 Nm (15 ft-lbs)

Spark Plug Wires NGK 8101 RC-ME78 (DOHC)

SOHC used 3 different kinds so you will have to do car-specific research. If you contact me with your VIN I should be able to tell you what you need.

Wheels & Tires Tire size: 205/65R15 94V

Tire pressure (USA service manual): 32 psi front, 26 psi rear.
Tire pressure (JDM 4WD door card): 30 psi front, 26 psi rear.
Tire pressure for alt wheel size 215/60R15 (JDM 4WD door card): 34 psi front, 26 psi rear.
Wheel size: 15x6JJ
Wheel offset: 46 mm (1.8 in)
Lugnut pattern: 5 point 114.3 mm (4.5 in)

Wheel Lug Nut Torque 65-80 ft-lbs
Power Steering Fluid ATF DEXRON II
Brake Fluid DOT4 or DOT3
Engine Coolant Fluid: DIA-QUEEN LONG-LIFE COOLANT 0103044 or high quality ethylene-glycol

Capacity: 8.5 quarts including heater and coolant reserve system

Note: These are Amazon affiliate links so if you use them I will make some pennies from the sale to help with hosting costs. However, these are the same products I would recommend in either case no matter where you buy them.