Operating Temperatures

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Operating Temperatures

October 08, 2019, 08:58:04 pm

I am on the first leg of our trip towards Mexico, and I am a little "rusty" about some things. What is a safe operating temperature for the engine, transmission etc?? You would think I would know the answer.....

Re: Operating Temperatures

Reply #1 – October 08, 2019, 11:08:33 pm

For your ISM11, coolant temp should be about 178-180°. Transmission about the same to +10°. Retarder temp is about the same as transmission to +10°. Retarder can spike to 240 - 250° very quickly. Under loads, big grades, high ambient temps, all of these temps can be 10-15° more.

Just rule of thumb, your temps may be slightly different.

Re: Operating Temperatures

Reply #2 – October 09, 2019, 12:14:01 am

Those number are pretty darn close to my 400ISL driving outside of Las Vegas in 98* this Summer and pulling a 4500lbs ford Explorer and climbing a grade. 198* on my coolant temp.

Re: Operating Temperatures

Reply #3 – October 10, 2019, 06:14:18 pm

Thanks, guys. Looks like I am OK. Nice to know...

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