Millers Oils CRO 10w40 -Competition Running-in Oil, 5 Liter jug

★★★★★ 4.9 145 reviews

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Product details

Management number 219846936 Release Date 2026/05/03 List Price $18.00 Model Number 219846936
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PRODUCT NAME/VISCOSITIES: CRO 10w40 DESCRIPTION: Competition running in oil for test bed running up to 4 hours. Advanced formulation of high quality solvent refined mineral oils fortified with special low volatility components and appropriate additive treatment. A 10w40 viscosity grade mineral oil which has been carefully formulated to offer an extremely high protection level to new engine components and speed up the bedding in process. Ideally suited for test bed running. APPLICATION: Use as received for test bed running. May also be used for light operational duties up to 500 mls/800kms. Developed for modified petrol and diesel engines. USER BENEFITS: CRO 10w40 is formulated to meet the needs of the professional engine builder Maximises power output by optimising bedding in process CRO 10w40 provides full protection of highly stressed components whilst allowing optimum bedding in process for piston rings and bore CRO 10w40 additive technology enables full load runs for short bursts The viscometrics selected ensure that even though the additive system performance is strong the pistons can achieve satisfactory boundary lubrication for bedding purposes PERFORMANCE PROFILE: Suitable for 5 hours test bed running or 500mls/800km on road Optimum oil temperature 85-115oC Very low leak down [4%] after controlled test bed running TYPICAL CHARACTERISTICS: SAE Viscosity Grade10w40 Specific Gravity @ 15 deg C 0.871 Kinematic Viscosity @ 100 deg C 13.6 cSt Kinematic Viscosity @ 40 deg C 89.8 cSt Viscosity Index 154 Pour Point deg C less than -25 Flashpoint deg C greater than 200 Cold Crank Viscosity @ -25 deg C 7,000cP Maximum

  • CRO 10w40 is formulated to meet the needs of the professional engine builder
  • Ideally suited for breaking in a new engine
  • Allows optimum ring seal
  • Suitable for 5 hours test bed running or 500mls/800km on road
  • Elevated ZDDP
Size 5 Liter
Viscosity 10W-40
Brand Name Millers Oils
Unit Count 169.07 Fluid Ounces
Manufacturer Millers Oils
Liquid Volume 5 Liters
Container Type Tube
Manufacturer Part Number 7981GMT
SAE J300 Viscosity Grade 10W-40
Manufacturer Warranty Description 1 year

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