Search for: Introduction To Roth Automotive Science › Forums › Topic Tag: efficiency Viewing 3 topics - 1 through 3 (of 3 total) Topic Voices Posts Last Post Bigger cars = more braking heat? Started by: theory816 in: Performance 2 6 3 years, 1 month ago admin What is the most efficient engine operating speed and load? Started by: admin in: Engine 1 1 5 years, 2 months ago admin Are Diesel powertrains a good choice today? Started by: admin in: Choosing a New Car 1 1 5 years, 4 months ago admin Viewing 3 topics - 1 through 3 (of 3 total)