Millers Competition Fully Synthetic CFS 10w-40 Engine Oil

1 Review

Suitable for extended periods at 125°C

£49.99 inc VAT

5 in stock


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

1 review for Millers Competition Fully Synthetic CFS 10w-40 Engine Oil

  1. j.clayton2007 (verified owner)

    when choosing engine oil it is a bit of a mine field out there.

    so many options from hundreds of different companies, with varying price points, claiming so many different benefits.

    so how do you choose a engine oil that is going to keep your engine spinning through thick and thin?

    well, i chose this oil over all others, why?

    its proven, time and time again, to be a great choice for boosted applications in the mx5 scene.

    if you read the description you can see there has been some serious science put into this engine oil to take all the guess work out for us, we just pour it in and reap the rewards!

    i will defiantly buy again!

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