Millers Classic Pistoneeze 40

SAE 40 monograde with ZDDP for classic and vintage engines

Millers Classic Pistoneeze 40 is a moderately detergent, mineral monograde SAE 40 engine oil developed for classic cars. It is also suitable for vintage cars with a modern filtration system.

The formulation contains ZDDP (zinc/phosphorus). It is sold in 1 L, 5 L, 20 L and 60 L packs.

Key properties

• Grade: SAE 40 monograde, mineral base oil
• Listed: API SG and API CD
• Viscosity: 146 cSt at 40 °C, 15 cSt at 100 °C, viscosity index 104
• Specific gravity 0.900 at 15 °C, pour point -30 °C, flash point above 200 °C
• Described as giving good oil control and keeping its viscosity under shear
• Packs: 1 L, 5 L, 20 L and 60 L

Choosing the right oil

SAE 40 sits in the middle of the Pistoneeze family, between 30 and 50. Choose it when the handbook of a classic or vintage engine names SAE 40, and when you want a straight-weight oil with ZDDP rather than a modern low-additive formulation.

Millers Oils is clear about one point: for vintage vehicles it assumes the owner is sure that no dirt or deposits have built up in the sump, because a detergent oil can release them. If you are not sure, have the engine inspected before switching oils.

For later vehicles, it is suitable where high-quality oil filtration systems were designed for monograde oils with detergent and dispersant additives. If you want a multigrade for easier winter starts, look at the Classic Sport or Classic Multigrade oils in the classic oils range.