i read about this engine braking thing noon pa, and I've been using it both for highway driving and descending steep descents, I only use the brake if necessary. sa diesel mas malakas ang engine brake effect kesa sa gas ( I think). Mas malaki kasi ang cylinder sizes so I guess mas malakas yung stopping force since you have to compress a bigger volume of air/fuel and mas mataas yung compression ratio. ewan lang kung valid yung explanation na yon :confused:

pinakamatindi kong nakitang mag-engine brake, yung boss ko when I was with him one time in his Nissan Safari. We were going southbound via SLEX, shet, di sya masyado gumagamit ng preno, from 110kph ibabagsak nya speed to 60-80 using engine brake lang. di naman masyado umiingay engine nya. from what I heard, di pa naman sya nasiraan ng clutch so I guess it safe to do. Nung sinubukan ko gayahin sa xwind ko in city driving, di pwede. masyado maingay 4JA1 engine pag nag downshift saka lumakas fuel consumption ko.