Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Transmission wear from P&G (pulse and glide)?

Piotrsko · 11-13-2021, 10:50 AM

Has nothing to do with babying between gears, but everything to do with dissipated heat energy. Take a piece of brass, heat it up to some high temperature, drop it in a cooling oil. Does it cool immediately? Nope. While its still hot, repeat process.

They synchros get hot, that gear speed matching energy has to go somewhere like the attached parts or the oil. What we used to call crash shifting means you have to speed up or slow down the entire gear set and shaft perhaps the clutch disc also.

If your process was harmless......we wouldn't need to have this conversation. Ever buy a commuter car with hard to get into first or reverse issues? Ever notice a commuter car has dirty trans oil?

11-13-2021, 10:50 AM	#55 (permalink)
Piotrsko Somewhat crazed Join Date: Sep 2013 Location: 1826 miles WSW of Normal Posts: 4,434 Thanks: 541 Thanked 1,208 Times in 1,065 Posts	Has nothing to do with babying between gears, but everything to do with dissipated heat energy. Take a piece of brass, heat it up to some high temperature, drop it in a cooling oil. Does it cool immediately? Nope. While its still hot, repeat process. They synchros get hot, that gear speed matching energy has to go somewhere like the attached parts or the oil. What we used to call crash shifting means you have to speed up or slow down the entire gear set and shaft perhaps the clutch disc also. If your process was harmless......we wouldn't need to have this conversation. Ever buy a commuter car with hard to get into first or reverse issues? Ever notice a commuter car has dirty trans oil? __________________ casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing. Last edited by Piotrsko; 11-13-2021 at 10:59 AM..