Sage Oil Vac’s line of preventative maintenance (PM) trailers helped launch Sage as a household name. Each trailer provides the capabilities that Sage has become famous for — oil changes on stationary diesel engines like irrigated ag, gas compression stations, peak power generators, standby power generators and any diesel engine application where the engine is not on wheels. Our trailers are built strong for off-road applications with two to four tank configurations for oil and antifreeze exchanges. Tanks can accommodate even the largest diesel engines with oil capacities of more than 100 gallons. Each model meets the National Association of Trailer Manufacturers (NATM) compliance standards and all National Highway Traffic Safety Administration (NHTSA) guidelines. Sage offers fully enclosed cargo trailers as well as open trailer models. Open trailers are designed specifically to optimize load conditions, tongue weight and axle weights.