Q: Grease viscosity

asked by on

Even though grease viscosity is depending on working temperature, why do viscosity of some grease increase and viscosity of some grease drops while working under high temperature?

Just like with motor oils, different operating environments require different characteristics of different grease products. For example, some characteristics of the grease to consider are the temperature tolerance and the "shear" qualities. Do tolerances get tighter with operating temperatures? What are the desired "shear" characteristics of the lubricant - essentially the strength of the lubricant before it breaks down? When molybdenum disulfide was all the rage, it was all about preventing metal-to-metal contact when conventional oil broke down. Check out this popular web resource for more discussion on oils and lubricants.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Grease viscosity

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Air Condition/Heat at the same time

Your 2006 Accord has the ability to mix the air for the driver and passenger sides independently of each other. Each has it's own control motor. I would suspect that the passenger control motor is failing or possibly the switch...

Q: Muffler smoke after doing repairs on the car

Most likely, the work you had done and the smoke are unrelated. Black exhaust smoke indicates a rich air fuel mixture and can be caused by problems like a leaking fuel injector or faulty engine sensor. White exhaust smoke indicates...

Q: Hello, I have two questions: 1) How often the Ignition Coil needs to be replaced? and 2) This model requires grease chassis?

Hi there. The spark plugs are rated for 100,000 miles for your vehicle, so you have about 5,000 miles left on their life for a decent spark. I recommend changing the spark plugs with the OEM parts to ensure a...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...