I can see cold oil could be a problem. but in our application I think it is pretty rare situation as most times we are not using our GMC's when that
might actually be a major issue. still takes time for radiator to get up to temp, and you are still running plenty of cold oil prior to radiator
warm up. having the oil running through the radiator cooler just changing the timing. It might though keep a more "stable" temp. If I do start
my GMC in sub zero, I have went to hooking up a magnetic block heater on the oil pan. too many variable factors involved to really know what it does
for our coaches long term. There are plenty who have the cooler bypassed with many miles.
as far as transmission temps go, I have never heard someone complain of transmissions running too cool?? with my recent failure of my transmission
I also start questioning why it is routed in the radiator. 180 degrees transmission temp is what i understand is on the high side. My coach runs
at 195-200. I know the radiator is not near 195 or 200 now per my IR gun. but still I wonder why you would want to run 150 degree transmission
fluid through a radiator when you read statements like As a rule of thumb, every 20 degree increase in operating temperature above 175 degrees F. cuts
the life of the fluid in half! At 195 degrees F., for instance, fluid life is reduced to 50,000 miles.
Even though I am extremely impressed with my superior aluminum radiator, I don't think they have a very good fluid cooler in it, just my casual
observation. it might make up for that because the entire radiator cools so well that it just does not get that hot... my recent transmission
destruction I am not reusing the cooler in the radiator. but I have noticed that most tranny coolers are pretty small in size. I bought one,
installed it, but now found one twice the size that will go in this spring.
--
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
