It effectively disperses oxidation products, preventing the formation of sludge and varnish on critical engine parts like pistons and valve train components.
Denison (now part of Parker Hannifin) is a manufacturer of high-performance hydraulic pumps and motors. Their HF-0 approval is one of the most difficult certifications for an oil to achieve. It requires a fluid to pass a brutal series of tests involving: lubrizol 7067c
: It has a Permanent Shear Stability Index (PSSI) of approximately 25% . This rating indicates its ability to resist mechanical degradation (thinning) when subjected to high-stress environments within an engine, such as the movement of pistons and gears. It requires a fluid to pass a brutal
: It is available as a liquid concentrate for easy handling in manufacturing plants, though solid polymer options exist for those who prefer to solubilize in-house to reduce costs. Application & Treat Rates Application & Treat Rates | Feature | Lubrizol
| Feature | Lubrizol 7067C | Standard OCP Modifiers | High-Molecular Weight PAO | | :--- | :--- | :--- | :--- | | | Excellent (Low) | Poor (High) | Good | | Low Temp Viscosity | Excellent | Poor | Excellent | | Cost | Medium/High | Low | Very High | | Thickening Efficiency | Medium | High | Medium | | Best Use Case | ATF, Hydraulics | Motor Oils | Compressors, Low Temp |