I hate guessing at specs and torques.   Video’s where someone just uses an impact driver to tighten up bolts drives me nuts.   Most ANY bolt on a modern car has a specific Torque.    Engine oil, brake fluid, coolant, all are specified by a manufacturer.   Mixing in the wrong coolant type could be a disaster.

As I undertake a project I research this out carefully from all sources like the Interwebs, forums, and owners manuals.   But I can’t remember it all, so I’ve taken to writing it all down in one place – here!   Hopefully you can make use of it too.

I suspect these specs are the same across all MX-5 ND series cars, but I’m personally just checking that they are right for the 2018 model year.

Engine

• Oil Fill Capacity
  • 2.0 engine – 4.3 liters (oil and filter)
• Engine Oil Grade – 0W-20 Full Synthetic meeting API SM
• Oil Drain Plug Torque – 35 Nm (30 to 41 Nm officially)
• Oil Filter Torque – Hand tight, but its officially 14 Nm (12 to 16 Nm officially)
• Engine Oil Filter – Mobil 1 M1-108A
• Front Cross Member Undertray Mounting Bolts – 35 Nm (32 to 38 Nm officially)
• Coolant – Mazda FL22
  • Zerex Green for Asian Cars meets this standard.
• Battery Size Type 51R

Transmission

• Manual Transmission Fluid – Red Line MT90 75W-90 2.1 liters

Wheels and Tires

• Front Tire Pressures
  • 29 PSI
• Rear Tire Pressures
  • 29 PSI
• Wheel Nut Torque
  • 140 Nm (103 ft-lb) (108 to 147 Nm officially)
• Tire Size – 205/45R17 84W

Brakes

• Brake Fluid Type – DOT3 by Mazda minimum spec, but Stefano recommends DOT4

Miscellaneous

• Key fob battery – CR2025