ronandsue74 Report post Posted February 25, 2013 I have a 2005 CC Inspire #51264 with a Cat C-9 Engine Serial # 9DG01439. My normal operating temperature when fully warmed up runs between 200-205 degrees F. I usually run at 65 mph, my temperature remains fairly constant regardless of ambient temperature or when pulling grades. My question is, is this operating temperature normal/ok. Thank you, RJ Share this post Link to post Share on other sites
wolfe10 Report post Posted February 25, 2013 Best advice is to call the Caterpillar RV Hotline with your engine serial number. They can look up your actual engine and give you the FACTS. Caterpillar 877 777-3126. Share this post Link to post Share on other sites
ronandsue74 Report post Posted February 26, 2013 Thanks Brett I'll call Cat RJ Share this post Link to post Share on other sites
desertdeals69 Report post Posted February 26, 2013 You can verify the reading with a infrared temp gauge at the sender. Since it doesn't vary under different conditions its probably ok, but the gauge may be reading a little high. Share this post Link to post Share on other sites