I am happy it was a victory for you Mark. Very thorough, integral report.:Thumbup:
I have a few questions:
1. How many total fans were installed for this trip?
The fan is the OEM belt-driven one. Slot was cut in bumper to accomodate install (Chevy modification only) and allow for good air flow over the TD-EOC.
2. Was the noise level changed for this trip, vs others?
The roaring Fan noise is gone. I have observed what my truck sounds like when 1 quart low on oil .... see below.)
3. Considering your prior experiences with rising ECT, and comparing with others that have reported similar heatup experiences, do you think the TD-EOC will solve OH issues for anyone towing legal loads on public roads? Why?
I will only speak for my case - the TD-EOC appears to have kept my ECT temps at or below 220 degrees (all the resolution I can get out of the OEM ECT gauge reading 210 or below ....) This is acceptable to me because before the TD-EOC, I was getting OEM ECT temps to 235 (which is about 240 degrees or so in actuallity.) Ambient Outside Temps did have some affect on the temps but the biggest was climbing while towing - this was the combination that caused the most problems. Until I climb a large grade towing on a day above 95 degrees, I cannot make such a statement referring to 'anyone' - I will say that so far I feel confident I can tow my camper on anything I have done so far (I68, I77, I81, I87, WVA mountain roads, etc.) without heatup. Before the TD-EOC, I could get my OEM ECT gauge to 235 when the AOT was 68 degrees just by towing a grade.
4. Is there any way that the TD-EOC did not meet expectation, or could be improved?
I just want to make sure I am not going to be overcooling things - the Mocal should take care of that. The air dam was a knucklebuster for me (I installed it after installing the TD-EOC) - otherwise I am extremely happy with build quality, installation and operation.
5. Will you change your oil change intervals as a result of what you are seeing?
I will stick to my interval of 5K miles since my truck is mostly used for towing.
The following information is not directly related to the question but I will mention it for reference and suggestions:
I have had some talks with others about what the actual oil level should be on the TD-EOC. I added 13 quarts this time. I tried 12 quarts because the dipstick read full, but I noticed more 'noise' so I added the extra quart. I also carefully measured what I drained out of the TD-EOC and know it takes a bit over 2 quarts alone, so with the 4 hoses, the Mocal, etc. 13 quarts should be fine. Maybe I should use 12.5 quarts? I am still open to suggestions. All I know is 12 quarts was not enough .... I could hear slightly more top/bottom engine noise with 12 quarts - sounds exactly when I put 9 quarts in stock before TD-EOC install - that was when I went by the dipstick.
6. Do you have an opinion on oil grade for this modification? Would you feel comfortable using conventional now?
I like running synthetic - I do my own oil changes. I like 5W40 Mobil 1 but they stopped selling it around the East coast. I would feel fine running 15W40 Rotella T, but since I don't put the miles on the truck except when towing the Synthetic is my personal choice. I run Mobil 1 in my daily drivers also.
7. On your trip, did you try to get ECT to rise, as you have seen before, a stress test per se?
On this particular camping trip I intentially drove hard up grades - specifically one very steep (7-8%) grade (about a mile long) when the outside temperature was over 90 degrees - I never did observe an ECT rise (remember though I was looking at the OEM gauge, so all I can say is that I did not exceed 220 degrees with this method. I did notice much better recovery after climbing a grade (could see OEM gauge move from 1 notch below center to 2 or 3 notch below center which can be converted using a chart I saw posted recently.)