The Mitsubishi L300 2.5L Diesel Engine is notoriously very hard to jump start. It has a heater that consumes more electric current than most of its competing brands of the same displacement or even higher! It takes about 3 tries for the GL6 to successfully jump start this L300 diesel engine. The GL6 has this feature of incrementally increasing its current output in succeeding tries which is not present in other competing brands. Thus, it is able to successfully jump start this L300 on its third try while other competing equivalent brands have failed! Please visit this link for additional info: http://powerbankphils.com/product/gl-6/. This is also available at Lazada: https://www.lazada.com.ph/powerbankphils/?langFlag=en&q=All-Products&from=wangpu&pageTypeId=2