Posted by Bruce on January 20, 03 at 10:20:39:
In Reply to: Compare it to climbing stairs posted by Ben on January 20, 03 at 09:40:32:
Pretty cute. But I would like to know the technical reasons for this. I have been checking around at other forumns and have some possible answers.
The fluid pumps through the transmission faster in 3rd than in overdrive. The increased volume through the cooler keeps it cooler.
On the other hand it has been brought up that there is more slippage in 3rd than in overdrive. The OD is locked up with no slippage. At least in some 700r4s. At freeway speeds it actually runs cooler in OD, at least that what some people have been saying - they have a gauge and have observed it.
I think the solution is to install a gauge and see what the temperatures are doing. Then install a cooler and see what the difference is. If it runs cooler in OD, like some have claimed to observe than I dont see why not use OD.
I still dont see the analogy with climbing stairs. Seems like there are a lot of conflicting information out there.
: Take 3 steps at a time. That is OD. Take 2 steps at a time. That is Drive. Take 1 step at a time. That is 2nd.
: Now strap 50-100 lbs in your back pack. Which number of steps would you like to take climbing up the Empire State Building????? Which will destroy your legs/knees sooner?