Millers Competition Running-In Oil

Description

Millers Competition Running-In Oil

Millers Competition Running-In Oil (previously called CRO 10w40) is a mineral, multi-viscosity oil.

Used to run in rebuilt engines to ensure correct “bedding” in of highly stressed engine components such as the crankshaft and valve train etc.

APPLICATION

The running in procedure can be carried out on a test bed or in a vehicle on the road.  This oil may be used for light operational duties up to 500mls/800kms if running in on the road.

Use in conjunction with an Assembly Lubricant.  We recommend Millers Oils Competition Assembly Lubricant (ref. 7982).  When rebuilding an engine use Assembly Lubricant on vital components such as cam lobes for protection on initial start-up and the dedicated Millers Oils running in oil suitable to the engine type, eg. Classic, Automotive, Motorsport and Heavy Duty (HGV, Agricultural, Plant, Off Road).

USER BENEFITS:

• Millers Competition Running-In Oil is formulated to meet the needs of the professional engine builder.
• Engine will produce peak power and torque when required
• Increased component longevity through lower wear
• Lower oil consumption
• Maintains oil pressure
• Avoids bore glazing and high blow-by

TYPICAL CHARACTERISTICS:

Density @ 15°C … 0.870
Kinematic Viscosity @ 100°C … 14.1cSt
Flashpoint °C … >220

PRODUCT SIZES:

Millers Competition Running-In Oil is supplied in the following sizes: 1L, 5L, 20L, 199L.

RUNNING-IN PROCEDURE AND DISCLAIMER:

Millers Oils Running In oil has been designed to last the full running in procedure.  Do not use fully synthetic or semi-synthetic oils before the process is fully completed as this can lead to bore glazing.

• When the engine has been built to a high standard, fill with running in oil to the maximum mark on the dipstick.
• Run the engine at peak torque for approximately 500 miles/800 kms on the road or alternatively on a test bed/rolling road.
• Indication that the procedure has been completed includes:
  • Compression ratio to manufacturer’s specification.
  • Increased engine performance, eg. acceleration.
  • Improved efficiency.
  • Reduced oil consumption.

Although Millers Oils provides a general guide for the running in process, the onus lies with the engine builder to ensure that the correct procedure for the engine is completed effectively.

ADDITIONAL INFORMATION:

For further information on this product, and on other products for competition use, please refer to the FAQs Motorsport page and our full range of Motorsport Engine oils available for purchase from our online shop.

For details of our other running in oil, see Millers Classic Running In oil SAE 30. This product is designed for the initial running in of re-built classic engines. Formulated for running in on the road but can also  be used for test-bed running.

For other useful info, see the following article:

How Can I Protect My Rebuilt Engine?

HEALTH AND SAFETY:

Health and Safety Data Sheet 7981 applies to Millers Competition Running-In Oil. When used for the purpose recommended and with due regard to the appropriate Health and Safety Data, the product should cause no concern. If in doubt, consult with Millers Oils Technical Department.