New Propane Filters Target Particulate Matter
Alliance AutoGas aligns with Donaldson Co. on a line of LPG filters designed to remove potentially harmful particulate matter and heavy ends from propane systems.

New filters from Alliance AutoGas and Donaldson have been designed to eliminate potential fuel contamination issues with propane fuel dispenser systems.

New filters from Alliance AutoGas and Donaldson have been designed to eliminate potential fuel contamination issues with propane fuel dispenser systems.
Alliance AutoGas has aligned with Donaldson Co. to release a new line of LPG filters that are designed to remove potentially harmful particulate matter and heavy ends from propane systems.
The filters are currently available through propane equipment distributors nationwide.
According to Alliance AutoGas, while it’s common for gasoline and diesel fuels to be filtered multiple times as they are transported to end users, propane has historically not been filtered. As propane has gained popularity as a transportation fuel, called autogas, consistent fuel quality has become a greater need for fleet customers.
Two new filters from Alliance AutoGas and Donaldson have been specifically designed to eliminate potential fuel contamination issues with propane fuel dispenser systems. A primary LPG particulate filter was developed to remove 99% of harmful particulates 0.5 micron and larger. Also, a secondary absorbent carbon filter was engineered to remove heavy ends without removing the odorant from propane.
The filter housings are made from a high phosphorus nickel-plated steel, meeting current NFPA 58 (5.17.1.3) requirements for pressure containing metal parts.
The filters can be sold and installed separately or together for a customized solution.
For more information on the Donaldson LPG filters, contact David Kennedy, director of autogas design for Alliance AutoGas. For ordering information, contact Helen Marks.
More Alternative Fuels

Alt-Fuel Moves: Electric Bus Rollouts, Bidirectional Charging & Propane Growth
See which fleets are adding electric and propane school buses as districts and operators invest in charging infrastructure, bidirectional technology, and alternative-fuel expansion.
Read More →
Nobody Told Diesel Prices They Were Supposed to Come Down
With diesel prices surging, school bus fleets have new reason to stress-test fuel costs, consider diversification, and calculate what each route really costs to operate.
Read More →
Why Gasoline School Buses Are Making a Comeback
Gasoline is gaining ground in full-size school buses. See how today’s options stack up against diesel on cost, maintenance, emissions, performance, and more.
Read More →
EPA Opens $180M DERA Funding Round for Diesel Upgrades
The 2026 Diesel Emissions Reduction Act program seeks applications from eligible organizations to accelerate the retirement of legacy diesel vehicles.
Read More →
The Secret Life of an Electric School Bus Battery
Batteries change throughout years of daily routes, but degradation doesn’t necessarily mean the end. Here’s what operators should know about performance, safety, and second life.
Read More →
CALSTART and Forth Combine to Form Catalyst Mobility
The new name represents a renewed vision for the nonprofit focused on advancing clean, equitable, and affordable transportation solutions that move people and goods.
Read More →
Alt-Fuel Moves: New Buses, Charging Hubs & Real-World EV Testing
Propane and electric school bus deployments continue to grow as districts add new vehicles, expand charging infrastructure, and gather more real-world operating data.
Read More →
Fewer Electric School Bus Models Reshape the U.S. Market
WRI’s latest buyer’s guide points to a consolidating electric school bus market, but fewer options may reflect a maturing industry rather than fewer meaningful choices for school bus operators.
Read More →
The Fuel Budget You Can Actually Predict: How Propane Autogas Keeps Money in the Classroom
Learn how propane autogas helps school districts manage fuel costs with predictable pricing, lower maintenance, and reduced emissions from former transportation director Joel Stutheit.
Read More →
Hendrickson, Driventic Introduce New Electric Powertrain for School Buses
ELECTRAAX, the electrified, lightweight drive axle offers integrated ePowertrain efficiency and modular flexibility for Class 6–7 school bus use.
Read More →
