Diesel Inspection: National Brake Safety Week

I'm not sure how these things get started but it seems like there are plenty of them. National Pollinator Week celebrates the work of bees. National Dog Week, the last week in September, celebrates man's best friend. 

This week is Brake Safety Week, emphasizing the importance of brake systems and components during roadside inspections across North America. Here's a press release from Champion Brands followed by a link to a Fleet Owner story about this important topic. 

This Week is Brake Safety Week

You may want to take time to check your vehicle. The Commercial Vehicle Safety Alliance's annual Brake Safety Week is in full swing. It’s when law enforcement inspectors across North America will be looking for any commercial motor vehicles found to have brake-related violations that might place them out of service.  

During last fall's brake inspection blitz, more than 5,100 commercial vehicles were placed out of service because of brake-related violations. In addition, brake system and brake adjustment violations accounted for more vehicle violations than any other vehicle violation category, accounting for 38.6% of all vehicle out-of-service conditions. 

What can you expect if pulled over for inspection?

Law enforcement officers checking brake systems will look for:

• Loose or missing parts
• Air or hydraulic fluid leaks
• Trouble-indicator lights on the dash, including antilock brakes
• Worn linings, pads, drums, or rotors
• Mismatched air chamber sizes across axles
• Warning device functionality (such as antilock braking system indicator lights)
• Proper brake adjustment
• Brake hoses and tubing condition 
• Measure pushrod stroke to ensure brakes are properly adjusted.

“While you are at it, it’s a good idea to either top up or flush your brake fluid,” suggested Karl Dedolph at Champion Oil.  “Brake fluid is an important component in any hydraulic braking system. The fluid is subjected to hundreds of pounds of pressure but also needs to lubricate rubber components in the master cylinder, wheel cylinders, calipers, and hoses. In addition, brake fluid has corrosion inhibitors that keep the bores of hydraulic cylinders from rusting and pitting.”

 

“Most of today’s brake fluids are made of polyalkylene glycol, which is hygroscopic, meaning it absorbs moisture. The absorption of water prevents “pooling” of the absorbed water in the brake system, where corrosive acids can form and make the components deteriorate.  Water in a brake system will also cause fluids to freeze or boil faster.”

 

“Champion DOT 3 Brake Fluid is typically recommended for cars and trucks prior to the mid-1990s, but DOT 3 brake fluids still makeup a large portion of service fills in newer vehicles. DOT 3 brake fluid has a dry boiling point of 490 degrees, which is fine for brake systems with large brake drums and thick disc brake rotors, where brake heat can be easily dispersed. It has a viscosity of roughly 1500cSt at -40 F. Exceeds the specifications of Federal Motor Vehicle Safety Standard #116 and SAE J1703 for DOT 3 brake fluids.”

“Champion DOT 4 Brake Fluid is recommended for most disk brake vehicles and is also a poly-glycol base. DOT 4 has a boiling point of 494 degrees F., and it is rated at a viscosity of 1800cSt at -40 F. This DOT 4 brake fluid differs from DOT 3 due to the ability it has to chemically scavenge water, reducing the rate at which performance deteriorates when the fluid is exposed to humidity in service. Exceeds the specifications of Federal Motor Vehicle Safety Standard #116 and SAE J1704 for DOT 4 brake fluids," added Dedolph.  

Read the Fleet Owner story here: 

https://www.fleetowner.com/safety/article/21164730/cvsa-sets-date-focus-for-brake-safety-week

New Diesel Engine Oil Technologies Lead To Improved Performance and Efficiency

Photo by Josiah Farrow on Unsplash

Since the mid-1970s the U.S. government has taken on the role of setting standards for fuel efficiency and reduction of emissions. In 1975 Congress implemented Corporate Average Fuel Economy (CAFE) standards, which has been a driver for much of the change that has occurred in engine design during the past five decades. The trigger at that time was the OPEC oil embargo that caused shortages and a spike in fuel prices, so the initial standards were more focused on fuel consumption.

Efforts to reduce emissions gradually increased in importance in subsequent decades. Along with engine design improvements it became apparent that more advanced lubricants were needed to achieve the goals being required by the National Highway Transportation Safety Administration (NHTSA) and the Environmental Protection Agency (EPA)

Near the end of July Fleet Owner magazine published a story about emissions efficiency related to new diesel engine oil technologies. The aim of this story is to help fleet owners and managers understand the new formulations being introduced to satisfy global fuel economy targets. What follows are some highlights from this article.

An engine oil's main task is to reduce friction and ensure that moving parts are kept from coming in contact with one another. (This latter function is why film strength is increasingly important.) Oil is also necessary to transfer heat away from the engine and remove impurities and debris that might collect on critical parts.

With the technical advances taking place in diesel engine, driven by the need for greater efficiency, the lubricants are experiencing greater stress. Not only must they perform under harsher conditions for longer oil-drain intervals, they must do so in the presence of biofuels, without compromising protection.

In recent decades we've seen the introduction of significantly thinner oils for automobiles. It's been recognized that there are also gains to be made in the heavy duty truck market by means of lower-viscosity oils. How far can one go without compromising engine durability?

The rest of this article presents the results of field trials by Shell pertaining to fuel economy in Class 8 trucks. The data they have analyzed is drawn from 39 million miles of testing with CK-4 and FA-4 technologies. (See: Understanding CK-4 and FA-4) 

The first benefit is that lengthened oil drain intervals can result in major oil savings for fleets due to fewer oil changes. Using a higher quality oil, as opposed to one meeting minimum standards, drain intervals would nearly double and oil usage nearly cut in half.

A higher quality diesel engine oil is more impervious to oil breakdown, which makes longer oil drain intervals possible. The majority of these oils use synthetic or hybrid basestocks. The article details Shell's tiered offerings for the various engine types. You can find the Champion Brand diesel oils for your application here.

Related Links

Here's help to select the right diesel oil for your application:
www.DieselOilMatters.com

OEMs, Fleets Improve Performance and Efficiency with New Engine Oil Technologies

Here's Help for Fleet Owners to Get a Better Understanding of FA-4

"FA-4 oil specifications were released back in 2016 and have been produced to enhance fuel efficiency. However, slower OEM adoption rates and engine protection concerns have kept some fleets from moving forward with adopting the new oil category."

So begins a story by Cristina Commendatore that appeared in the October issue of Fleet Owner magazine, How fleets can determine if FA-4 engine oil is right for them.

When API released FA-4 oil specs in 2016, there was a measure of confusion, as often happens with new lubricant categories. Four years down the highway, and it's apparent that there's either confusion or a lack of confidence regarding the issue of engine protection in these lower viscosity oils. Some fleets are still debating whether to make the switch.

The backward compatible CK-4 spec replaced CJ-4 as the most current for apps in which a CJ-4 oil is recommended. The benefits include better shear stability, oxidation resistance and aeration control. The thinner FA-4 oils offer improved fuel economy. They were designed to help meet more stringent demand to meet environmental aims.

Hence, the use of the letter F in the spec. F stands for Fuel economy. The A indicates that this is the first generation of oil specific to this objective.

Commendatore focuses on the misperception that FA-4 and CK-4 oils have different qualification standards. That is, some people think that FA-4 was more concerned with fuel economy at the expense of engine protection. This is not the case at all. FA-4 oils are absolutely required to pass the same engine protection tests.  

She asks: So, how can fleets determine whether the new FA-4 category is right for them? 

The answer is this: Fleets with model year equipment from 2014 and newer, or Detroit Diesel engines as far back as 2010, are the recommended candidates.

Engine manufacturers and lube makers only work when they work together. Oil and water may not mix, but oil formulators and engine builders absolutely must. 

The rest of the article details some of the issues created during this period in which government has applied pressure to also reduce emissions. For fleet owners, another challenge is that many truck fleets have both older and newer vehicles. This means inventorying two different oils and making sure the correct oil gets in the correct trucks during oil changes. 

If you're a fleet owner or do fleet maintenance, read the rest of this article here.

Photo by Brian Wangenheim from Unsplash