When you're measuring high-temp/high-shear viscosity, or HTHS, Loop explained, it is measuring the viscosity of the oil as it would be in the engine, where it's being flung around at high ...

To meet the expected greenhouse gas/fuel efficiency standards the federal government is in the process of developing, oil companies and engine makers have been busy developing a new standard for ...

The switch to API CK-4 and API FA-4 oils under PC-11 has been underway since December. To help in the transition, Chevron has posted an ongoing Q&A series on its Delo website, deloperformance.com.

In addition, API FA-4 introduced fuel economy SAE XW-30 grades with high temperature, high shear (HTHS) viscosity range of 2.9cP–3.2cP for fleets’ on-highway applications. To meet government ...

‘Selecting the optimal VII for use in these environments is increasingly important, as formulators search for ways to minimise HTHS viscosity at higher temperatures to improve fuel economy.

HTHS measures oil flow resistance ... Matheson stated the expected savings when moving to lower viscosity lubricants is significant and can be implemented quickly with minimal upfront investment.

As the PC-11 category is further developed, one term you’ll want to add to your trucking vocabulary is: High Temperature High Shear (HTHS). This has become an industry-accepted method of measuring ...

Low viscosity engine oils also undergo the same qualification test programs as higher ... provide additional potential fuel savings over API CK-4 of the same grade – up to 1% when comparing an SAE ...

Prior to this year’s Technology and Maintenance Council’s annual meeting, Overdrive sister site CCJ had the chance to talk to ExxonMobil’s Lilo Hurtado, the company’s senior applications ...

“It's kind of confusing in the marketplace because we’re going to end up with 5W-30s or 10W-30s that fall into both categories and they're going to be different. This ...