Re: What\'s your warmup time?
Tom H
There is alot of valuable info being discussed re warmup time. I can add that if you are interested in diesel engines there is a terrific book, The Romance of the Engine, by Dr. Suzuki. He discusses warm up. It has been a long time since I read that book altho I do recall his saying that at idle the engine will not heat up to operating temp sufficiently.
Even at todays high fuel costs I let my tractor warm up. If we had guages giving readouts on coolant, engine oil and hydro oil temps we would see, I am sure, that the oil requires alot more time to heat up than the coolant. And there is a substantial load of oil to heat up in both the engine and the hydro systems.
Going back to "the old days" I recall a friends Porche (not diesel) temp guage which actually told you not to get on it till fully warmed up. I have always followed that admonishment.
Remembering that "directive" by Porche I was curious so I put an engine oil temp guage on my Ford (engine holds 15 quarts) and was amazed how long the oil takes to reach operating temp........
Also, conversly, in my Cat motor graders operating manual they say in no uncertain terms to let it cool down 5 minutes after driving the beast.
IMHO you are not overdoing your warmup time even if the Kubota diesel is light years away from that venerable old VW diesel. The Kubota will love you for the care you give it and will stick around longer and give you less headaches.
Max