Hi all. I am new to your forums and have a few questions concerning My 1996 Safari motorhome. It has the 3226 Cat 300 in it. It seems that when it warm out, it wants to run very warm. (220-225). I have replaced all coolant, washed engine area, and so on. It still wants to run hot! When its cold out, it will stay 180* at 70mph all day. This is my first motorhome and am kinda stumped on the problem. Has anybodyelse had these problems with this particular motorhome? Thanks, great site!!