Bozard Lincoln

540 Outlet Mall Blvd
Directions Saint Augustine, FL 32084

  • Sales: (877) 233-4126
  • Service: (866) 681-3854
  • Parts: (888) 625-5768

Bozard Service Tips


Power Stroke® Diesel engines provide unmatched performance and durability but they also require regularly scheduled maintenance. Power Stroke® Diesel engines and Super Duty® pickups are used in a large variety of demanding applications. Owner's put their vehicles through their paces and keep bringing them back for more. Depending on the application of the vehicles, maintenance intervals may vary.

There are two different types of operating conditions: Normal Service and Severe Service. Normal Service intervals are considered general vehicle usage while Special Service intervals are defined as follows:

Frequent or extended idling
Over 10 minutes per hour of normal driving. Frequent low speed operation. Sustained heavy traffic less than 25 mph, 1 hour of idle time is equal to approximately 25 miles of driving. (Note: If vehicle is operated in sustained ambient temperatures below -10F or above 90F)

Operating in severe dust or off-road conditions

Towing a trailer over 1,000 miles (20% of driving)

Sustained, high speed driving at Gross Vehicle Weight Rating (maximum loaded weight for vehicle operation)

Use of Any Biodiesel

B5 is the maximum allowable blend to be used in any Power Stroke ™ Diesel

At Bozard Ford we recommend following the Severe Service guidelines for the majority of our Powerstroke customers as we have determined that most applications are subject to one or more of these conditions and that MOST DIESEL ENGINE FAILURES CAN BE DIRECTLY ATTRIBUTED TO IMPROPER MAINTENANCE.


Always use Motorcraft filters on your Powerstroke Diesel. These filters were specifically designed for your engine and have a patented design. This means that the competition cannot even build filters that provide the filtering efficiency that Motorcraft filters do.

Fuels and Additives

Ultra Low Sulfur Diesel (USLD) Fuel:

Part of a multi-tiered effort to reduce tailpipe emissions, the United States Environmental Protection Agency (EPA) has put in place various emissions requirements for on-road diesel equipped vehicles. Tier 2 was put in place in 2004 and introduced concepts such as Exhaust Gas Recirculation (EGR) to the diesel industry. 2007 and Tier 3 of this emissions requirement will bring about many new changes. The 6.4L Power Stroke Diesel Engine will be equipped with a Two State Turbocharger, enhanced EGR System and Common-Rail Fuel Injection System. It will also feature exhaust after treatment devices such as an active Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC). These new after treatment devices, with the help of exhaust gas recirculation, will help to reduce tailpipe emissions 97% from tier 2 requirements (6.0L Power Stroke).

To help the diesel engine manufacturers meet the 2007 EPA emissions requirements, the Federal Government is issuing new diesel fuel and engine oil standards.

Previous diesel fuels were rated at 500 parts per million (ppm) of sulfur content. Throughout the industry this was denoted as Low Sulfur Diesel (LSD) Fuel. To aid in the reduction of harmful pollutants the new diesel fuel standard will reduce the amount of sulfur to 15 ppm. This new fuel is commonly known as Ultra Low Sulfur Diesel (ULSD) Fuel. Starting on June 1, 2006 all retail diesel pumps had to be labeled with stickers to alert customers what standard of diesel fuel they were about to purchase. The most important thing to remember when buying diesel fuel is that 6.4L Power Stroke engines will require USLD. All previous Power Stroke engines (6.9L, 7.3L and 6.0L) can run on either LSD or ULSD.

There will also be a new engine oil classification for 2007. This engine oil is called "CJ-4". This classification works in conjunction with USLD to help reduce tailpipe emissions. This new oil has reduced sulfated ash and phosphorous. It is engineered to help carry the extra soot that is recirculated by the enhanced exhaust EGR system on the 6.4L Power Stroke.

Fuel Quality

Unlike gasoline, diesel fuel is not federally mandated on a strict quality policy. Diesel fuel quality is measured by its cetane rating. The cetane rating of diesel fuel is similar to that of the octane rating of gasoline. The higher the cetane rating the more efficient the fuels will combust.

The more efficient the combustion process, the fewer emissions in the exhaust gas.

The minimum cetane rating for Power Stroke Diesel engines is 45 cetane. Unfortunately, cetane levels at various fuel sources around North America are very inconsistent. Low cetane levels can lead to lack of power, reduced fuel economy and various drivability concerns. Low cetane diesel fuel can be improved by using fuel additives. Motorcraft Cetane Booster and Performance Improver (PM-22-A - US, PM-22-B - CAN) can improve cetane levels as much as 4-6 points. Motorcraft fuel additives are available at Bozard Ford Lincoln Mercury or any Ford Dealership.