newtoveggie wrote:I was referring to the VO temp being at 140 degrees during 35-40 degree outside temps when idling for 5 minutes. Do you experience this?
My VO temp gauge (starting at 100 degrees) doesn't move for the first 45 seconds after switch over when it is 30-40 degrees out. That is when I am going 60 MPH. This is the tense moment.
If I idle prior to and during switch over I may be looking at 5 minutes to get VO temp close to 140 degrees. What temp do you let your VO get before you start driving after switch over? What temps are you seeing in general? What sort of temperature boost do you feel the PSD gives to the VO? I read, and have been hoping for, 50-60 degrees.
Thanks for all the info you can give.
Sorry-I didn't notice this post until just now. I don't have a lot of time to browse the forums lately. The V3 simply uses a "hose on hose" system from the heat exchanger to the engine. It's a pretty short run and yes, the oil gets a boost once it hits the cylinder head rails as well. As for the actual temperature I'm not sure, but I don't really need to be concerned with it anyway since it will automatically switch back to diesel if the temperature drops below the setpoint in the computer. In fact, some 6.0L diesels had coolant flow problems that was causing the V3 to shut off because it was getting too cool while idling, etc...
I've never had a problem of any kind yet (knock wood) with my 7.3L. I use oil with lots of PHO, which is a pain to filter, but even in single digit temperatures I switch over in about 15 minutes. A lot of this has to do with the engine itself however. When I idle my truck on a cold morning the high idle and exhaust backpressure valve kick in which helps to bring the engine close to operating temperature quickly. I'm pretty sure that all 2002 and later trucks have this. Hope that helps a little.