엔진오일 교환 수리 사례

2026. 6. 30. 작업

난이도 & 준비물

증상

how to optimize fuel consumption by changing the rear differential ratio?

처리 내용

The short answer is that yes, you can change your differential to optimize fuel efficiency. CAVEAT: it is almost certainly not worth it. Here's a very high level discussion of why there are better ways to achieve the same goal (better fuel efficiency): Think about how the air-fuel mixture in the engine is managed: for each revolution of the engine, a unit of air is sucked into the cylinder. A unit of fuel is added to this air according to the ratio set by the fuel regulator (an engine computer, a carb or functional equivalent). This combination of air and fuel is then going to be compressed and combusted. However, that squirt of fuel was your entire fuel consumption: that's the only time that fuel leaves the tank on its way to being ignited. If you want to manage your fuel consumption, you want to reduce the number of times that injection happens and also keep the amount of each injection down. So, you have two things that you can manage, one of which was the topic of your question: Ge