What is Hths in engine oil?

HTHS measures the viscosity (resistance to flow) of an engine lubricant at elevated temperatures (150°C) under constant shear, simulating the narrow tolerances and high speeds between moving parts in a hot engine.

What is SAE viscosity grade of oil?

Based on the coldest temperature the oil passes at, that oil is graded as SAE viscosity grade 0W, 5W, 10W, 15W, 20W, or 25W. The lower the viscosity grade, the lower the temperature the oil can pass.

What is SAE class oil?

The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils. This number represents the oil’s resistance to thinning at high temperatures. For example, 10W-30 oil will thin out at higher temperatures faster than 10W-40 will.

What is SAE 60 oil used for?

MAXOLINE Regular Oil SAE 60, also known as Commercial Motor Oil is a blend of HVI Base Oils. It is extremely resistant against aging. Suitable for general lubrication under mild conditions, such like bearings of pumping stations, circulating systems and for topping-up of certain classic cars engines.

What is the difference between C3 and C4 engine oil?

C4 is a lower “SAPS” oil (Sulphated Ash, Phosphorous, Sulphur) specifically compatible with exhaust after-treatments such as DEF. C3 actually has better lubricity properties (because SAPS are a good thing extreme-pressure-wise), but may effect emissions.

What is high Hths?

HTHS is the abbreviation for “High Temperature High Share”. It is the apparent viscosity of a multigrade engine oil at 150 °C (high temperature in the engine compartment) and a velocity gradient of 106*s-1 in a defined measuring vessel according to the method CEC-L-36-A-97.

What is oil shear?

Shear stability describes the property of an oil to resist the action of shear forces and the related mechanical destruction by breaking and tearing. It is the resistance to changes in viscosity. If these polymers are destroyed by mechanical stress, the viscosity of the lubricating oil changes.

Can I use 5W30 instead of SAE 30 oil?

5w-30 is fine to use. It has the same flow rate as SAE30 at normal operating temps. The way oil works is, the first number is flow rate at ambient temp.