5th Gear Swap: MPG Update 2 Years Later 0 ▲ AdventureTaco 1 hour ago · Life · hide TL;DR - The new 5th gear definitely increased my fuel economy on the freeway. Of course, I probably still spent more on the swap than I'll save at the pump! Move over Scrooge McDuck, I want to fill a swimming pool with the money I've saved by swapping my 5th gear and improving my MPG! This is probably the last update I'll make for my fuel economy improvements as a result of the new 5th gear I added from an R452 transmission. I've updated a few times with my gas mileage numbers since the initial install, and I've continued to… Commenting on Bubbles has been removed. Why? If you want to talk about this post, write to the author, use the comments on their blog if it has them, or reply with a "RE:" post on your own blog. Suggestions? feedback@bubbles.town