Suitable for extended periods at 125°C

1 in stock (can be backordered)

£49.99 inc VAT

1 in stock (can be backordered)


Millers Competition Fully Synthetic 10w-40 Engine Oil is ideal for Mazda MX-5s that see extensive track use. Specified to operate at a dizzying 125°C for extended periods, Miller’s CFS 10w40 oil will withstand peak temperatures of 150°C.

Formulated with 100% synthetic base fluids, including a synergistic blend of three esters combined with the latest additive technology for maximum performance. CFS 10w40 is suitable for smaller capacity race and rally engines and turbocharged engines for fast road and track days. This is also a high performance alternative to standard oils where the manufacturer specifies this viscosity.

Millers CFS Provides up to a 26% reduction in friction plus a reduction in wear compared to a standard engine oil. By utilising both polyalphaolefins (PAO) and ester synthetics specially selected to minimise the amount of polymer used, the lubricant film provided is more resistant to ‘shear’ and viscosity loss in highly stressed areas.


SAE Viscosity Grade 10w40
Specific Gravity @ 15°C 0.879
Kinematic Viscosity @ 100°C 15.5cSt
Kinematic Viscosity @ 40°C 105.3cSt
Viscosity Index 156
Pour Point oC -33
Flashpoint oC 243
Cold Crank Viscosity @ -25°C 7,000cP Maximum
TBN mg KOH / gm 10.0

For Comparison purposes below, not all oils are created equal!

Weight 4.555 kg
Dimensions 19 × 12 × 34 cm

Millers Oils




1.6, 1.8


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