Oil cooling
- Thread starter super diesel
- Start date
The channel that is flat and has a 90 is oil cooler feed. Put the sensor in one of the ports in that channel
Has anyone ever done testing with an aux cooler and where it is mounted? I.E. is it better to place it in front of the cooling stack or mount it under the truck with electric fans? I'm going to be running an external cooler on my motor rebuild with the 2020 cooler (overkill is my goal) so that oil temps aren't a major concern but will be monitored.
I finally moved my temp sensor to the cooler the other day. I have driven it around a little unloaded, and I am seeing temps around 20 degrees hotter than I was seeing in the pan. I don't know if this is a straight 20 degrees or if the delta changes with temperatures. However, this tells me that just the upgraded factory cooler has dropped my oil temps by roughly 10 degrees unloaded in the heat of summer. I got out on the highway running 75-80, and the temps were holding pretty steady at 210 (old cooler would run 220 same conditions). It town or below 60 it would drop back to around 200. I'll update what kind of temps I see towing next time I hook up to a trailer.
see how close it is matching up with coolant temps now. I noticed it was staying right on track with coolant temp till loaded down and no external cooler. curious if mines a bit more skewed with the added cooling capacity.
It ran closer to coolant temps when it was in the pan. My coolant temps empty usually run 180-185.
The problem is my readings with the factory oil cooler were all taken in the hot side of the factory oil cooler, and I wanted a good A-B comparison.
I would agree that oil pan temps would be the most representative of what the engine sees as that is the pickup. While it isn't the hottest in the system they all should provide a reasonable measurement, it just depends what you're looking to monitor.
I have 3 temp probes, the first one is the temp being supplied pre filter/ pre coolers. The second is after the stock cooler feeding the mains, the third is temp feeding the stock filter/cooler from aftermarket cooler. The aftermarket one is the biggest cooler Fluidyne sells and it also has their fan and custom shroud on it. I mounted it underneath a little in front of the fuel cooler next to the output shaft on the transfer case like a few others have done. Also have the nice mocal cooler adapter with the thermostat and still have the stock engine oil cooler.
On my setup when hauling heavy after the oil temp surpasses the coolant temp feeding the mains by 10+° then each cooler drops the temp by about 8-10°. The aux cooler I have a temp switch for a fan that comes on around 200° for the oil leaving the aux cooler. Most of the time unloaded the fan stays off unless it's 85+° outside or i'm getting some good WOT pulls in and oil temp feeding the mains is mostly the same as coolant temp. I don't have a actual pan temp sensor just what the pump is supplying the filter/cooler assembly, the hottest I've seen there is almost 250° and 230ish back to the mains. This was in the high 90's pulling 18k+ on some big hills doing 70+mph most of they way until coolant temps get over 230° then I start slowing it down.
On my setup when hauling heavy after the oil temp surpasses the coolant temp feeding the mains by 10+° then each cooler drops the temp by about 8-10°. The aux cooler I have a temp switch for a fan that comes on around 200° for the oil leaving the aux cooler. Most of the time unloaded the fan stays off unless it's 85+° outside or i'm getting some good WOT pulls in and oil temp feeding the mains is mostly the same as coolant temp. I don't have a actual pan temp sensor just what the pump is supplying the filter/cooler assembly, the hottest I've seen there is almost 250° and 230ish back to the mains. This was in the high 90's pulling 18k+ on some big hills doing 70+mph most of they way until coolant temps get over 230° then I start slowing it down.
Got any images on your setup? I’m leaning towards mounting in that area for ease of plumbing and keeping heat out of the cooling stack.
Here's a couple quick ones of the cooler
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That’s kind of what I was thinking. I’ve been looking at this Derale with a 190f or 200f activation switch. https://derale.com/product-footer/fluid-coolers/engine/remote-mount/65861-detail
The sandwich adapter for have is 160f opening and full open at 180f.
From what I have seen and what we typically measure the oil pan temp is the hottest place by a decent margin.
Interesting, Josh is showing that it’s not and that post pump/pre cooler actually is hottest
I guess i could see that happening on a truck going down the road maybe. With the wind blowing on the oil pan i guess that could cool it quite a bit. Kind of limited on that type of scenario here but there is an air source blowing steadily on the pan to replicate that. Where is he measuring in the pan?
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He has a ppe pan so I assume at the little plug in this pic below the oil level sensor
