Alternative Fuel

Alternative Fuel: Biodiesel, Flex, CNG, Hybrid & Electric

Biodiesel, a biofuel specifically used in diesel engines, is made from recycled soybean oil, cooking oil, animal fats, and other feedstocks. Biodiesel is manufactured to meet stringent technical fuel quality and engine performance specifications – so much so that it can be used in tandem with diesel fuel to power existing diesel engines at a mix of 5-20% biodiesel. ADS has the equipment and ASE-certified technicians who specialize in biodiesel engine maintenance and its complexities. Maintaining biodiesel vehicle engines is very similar to maintaining standard diesel engines, with a couple key differences that mechanics must be aware of specific to biodiesel cars and trucks, including:

If you have a vehicle that runs on alternative fuel such as biodiesel, flex fuel, or compressed natural gas/propane, Automotive Diagnostic Specialties (ADS Auto Repair) offers maintenance service and repair to keep you on the road safely and optimally. 


  • Algae growth – In warm and humid environments, algae can grow and live in biodiesel fuel lines and tanks. Because biodiesel is a bio product, algae are adept at surviving in this environment, so it’s important to keep your biofuel filter clean.
  • Sludge – Like any diesel engine, sludge buildup is a concern in biodiesel engines. Biodiesel has a different effect, however as it acts similar to a detergent when it comes into contact with fuel tank sludge. This causes the sludge to loosen and suspend itself in the fuel, allowing it to get sucked in the fuel lines and clog the fuel filter.

Flex Fuel

Flex fuel vehicles can run on a fuel blend composed of up to 85% ethanol or standard, unleaded gasoline. They are largely identical to gas-only vehicles and perform nearly the same as well, although since ethanol contains less energy than gasoline, more flex fuel is needed to travel the same distance when compared to gasoline-only engines. As the popularity of flex fuel cars continues to grow, more and more gas stations are becoming equipped with flex-fuel options at the pump. 

ADS Auto Repair offers maintenance and repair service to the growing flex fuel segment. Maintaining your flex fuel car or truck is nearly identical to maintaining any other gasoline vehicle, and ADS has the technicians to assist you.

Compressed Natural Gas (CNG)

Cars and trucks that run on CNG or natural gas are most often running on compressed methane. Both CNG and propane are relatively clean burning and accessible fuel sources, and are often used in vehicles that are used regularly for long-distance load carrying. With the natural gas energy industry booming, several automobile manufacturers are looking to offer natural gas cars and trucks straight from the factory.

The benefits of natural gas/propane vehicles is clear, but performing maintenance service and repair on them requires special training and attention. Engines running on CNG or propane require high-pressure systems — including storage tanks and regulators — to manage the flow of gas into the engine. It is critically important to have these parts inspected as part of your regular natural gas vehicle maintenance process. For your convenience all natural gas/propane vehicle service at ADS Auto Repair includes inspection of these systems.

Hybrid and Electric Vehicles 

We also offer repair and maintenance for electric vehicles and hybrid cars. For more information on these services, visit our Hybrid and Electric Vehicles page.

Count on ADS Auto Repair for your alternate fuel vehicle service. We’ve got the expert technicians, latest technology, and state-of-the-art facility to take care of your needs. Call us today at (480) 961-8704 to schedule an appointment.