Millers Classic Pistoneeze 50

SAE 50 monograde with ZDDP for classic and vintage engines

Millers Classic Pistoneeze 50 is a moderately detergent, mineral monograde SAE 50 engine oil developed for classic cars, and also suitable for vintage cars with a modern filtration system.

It contains ZDDP (zinc/phosphorus) and comes in 1 L, 5 L and 20 L packs.

Key properties

• Grade: SAE 50 monograde, mineral base oil
• Listed: API SG and API CD
• Viscosity: 225 cSt at 40 °C, 19.7 cSt at 100 °C, viscosity index 102
• Specific gravity 0.903 at 15 °C, pour point -12 °C, flash point above 200 °C
• Described as giving good oil control and keeping its viscosity under shear
• Packs: 1 L, 5 L and 20 L

Choosing the right oil

SAE 50 is the heaviest of the Pistoneeze oils and is a straight-weight choice for classic engines whose handbook specifies it. A pour point of -12 °C makes it a fair-weather oil: it is for cars that are used in the warmer months and put away for winter, not for a car that must start on a frosty morning.

If your engine can take a multigrade and you want more flexibility in cold weather, Millers' own Classic Sport 20W-50 or Kroon-Oil Classic Multigrade 20W-50 are the nearest alternatives.

As with the other Pistoneeze grades, Millers Oils advises care in vintage engines where the sump may hold deposits that a detergent oil could loosen.