Transmission Temp

[white07gmc]

I noticed that my transmission temp today was 196 degrees. Is that a ok temp? It was 101 outside today so that might be a contributing factor.

[RyanbabZ71]

Thats fine. Pretty normal. 225+ is when you should start to worry

[tyhuck]

as long as it stays under 200, your good. It shouldnt get over that unless you are towing or in the mountains or something. 225 is the point when the fluid will begin to break down.

[jerksville]

175*-225* is considered "ideal" operating temps for an automatic tranny.

 

240*- Atf fluid forms varnishes

 

260*- Seals harden

 

295*- clutch plates slip

 

315*- Seals and clutches burn out and fluid forms carbon

[brainpause]

Non towing and cruising, I have found that my trans temp is about 2 times ambient temperature, plus or minus 10%. Unless it is cool, like less than 50 degrees.

 

So, your temps about right.

 

Larry

[dewfpo]

90-100 degrees over ambient temp is normal once fully warmed up and at operating temperature.

 

DEWPFO

[white07gmc]

Thanks guys. I was going to replace the fluid but I guess I don't need to. 53,000 mile on the truck. If I do replace it what do you guys recommend as a good fluid? Price doesn't matter to me.

 

Thanks,

Jason.

[dlstewart01]

Dexron 6. one of the better fluids out there in my experience.

 

http://www.sandyblogs.com/techlink/2009/05/dexron-vi.html

 

List of who makes it.

 

http://www.imakenews.com/lubritec/e_articl...5.cfm?x=b11,0,w