Cat c7 question
I have a cat c7 7.2 liter engine in a 2004 Phaeton. I know that this was the first year that they changed over to the c7 7.2 liter from the previous years 7.2 liter cat engines. My question is how lon...
Forum Discussion
Passin Thru wrote:
FIRE UP You need to talk to CAT. 212 is not hot. You should be running CAT long life antifreeze (Red) and you can run in temps in CA as high as 230 degrees I believe because you are running it under 15 lb pressure.
Passin Thru,
I surely appreciate your advice here. I am running the Red CAT anti-freeze. And, this coach normally, for about 99.9% of it's travels, hovers around 190. As stated, it will climb on grades and especially if the outside temp is hanging around 90-100 degrees. Our first adventure with this rig was a couple of years ago and we were heading towards Vegas on the Baker grade. The outside temp was right at 104. Right close to the Hallorin Summit off ramp, the alarm system alerted me of "High heat threshold". I glanced at my Medallion Info screen and if I recall, the temp of the coach was around 217-220, (again, I think) and that screen said "High heat threshold". So I pulled off the freeway at that off ramp and, let it idle for a few minutes with a bit higher RPMs. All was well within about 5-6 minutes and the temp of the engine was around 201.
Now, I'm not sure how many others run at higher temps in that same situation but, I've since removed the radiator and the CAC and thoroughly cleaned every square inch of both. But, 230 degrees, that seems seriously high to me.
Scott
