Abby Normal said:
Where Y'at 96 Mystic, I agree with running w/o a/c. Mine lives with the a/c on. I'd make sure the timing is stock (10*). Adding timing adds heat. I'd try turning your fans on at a lower temp. The towing rad is a good idea too. Where you running a 50/50 mix in the rad? More antifreeze holds in the heat. I like a 30/70 mix of anti to water with WaterWetter. It works to drop the temp by about 10 to 15*. I could also be as simple as a sticking thermostat. I change it just to make sure you have a good one. 180* You should be freezing this July.
I agree with Adam B. when on the flat, the OD is on, when in hills the OD is off. At all other times I use judgement. If the trans is shifting a lot (i.e. very strong head wind, slight up hill) then I turn the OD off. Whether it's on or off is just a matter of good sense.
I change thermostats twice a year (190* winter when I do not tow, 180* summer when I do tow), 30/70 antifreeze/H2O with WaterWetter.
I think I will replace the stock Rad with a heavy duty package intended for towing ( anyone have one lying around they want to sell?)
The FlexLite fan is not electric - it replaced the stock clutch fan unit. Should I go back the the stock unit ?
What about oil (oil to Air) cooler? anyone feel , or see, the need to supplement the stock oil/water oil cooler for towing applications? And, how about the trans cooler - any need to upgrade to a larger unit?
The Lightning needs to last several more years (80K current miles). I change oil (synthetic) every 3K, transmission every two years (~20K miles), and keep the truck tuned all the time.
Any suggestions appreciated