Yield Stress and Apparent Viscosity of Engine Oils at Low Temperature

ASTM D 4684 - ASTM D 6896
A cooled engine oil is forming a gel structure that results in either excessive yield stress or viscosity of the engine oil, or both, and can cause failures due to lack of oil pumpability.
Suitable for: engine oils

Borderline Pumping Temperature of Engine Oil

ASTM D 3829 - The borderline pumping temperature is a measure of the lowest temperature at which an engine oil can be continuously and adequately supplied to the oil pump inlet of an automotive engine.
Suitable for: engine oils

Low Temperature Viscosity of Drive Line Lubricants
- Constant Shear Stress Viscometer -

ASTM D 6821 - The viscosity at low temperatures can become critical for both, gear lubrication and the circulation of the fluid in automatic transmissions.
Suitable for: drive line lubricants (gear oils, automatic transmission fluids, torque, and tractor fluids etc.)

Mini-Rotary Viscometer - MRV/TP-1

or

Constant Shear Stress Viscometer acc. ASTM D 6821
to be composed of:
- Mini-Rotary Viscometer - MRV/TP-1
- Driveline-Rotor
- Driveline-Weight Set