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Elevated Oil Temps when towing - potential solutions

1256 Views 29 Replies 12 Participants Last post by  Brokedownbutgood
Hey all:

I live in the middle of a mountainous terrain of Western Canada, so we pretty much always deal with climbing steep terrain and mountain passes when camping with our travel trailer. I’ve been searching through the forums and getting lots of great info to help manage elevated oil temps when towing.

My current set-up:

2016 Ram 1500 Crew Cab SLT, GDE Engine & Transmission Tune, 3.55 gears, Timbergrove ASAM, upgraded 275/65/20 rims/tires (17” original factory stock – I know the larger rims/tires are detrimental for towing, but appearance matters too…)

Travel Trailer:

2020 Springdale 220BHWE; 4,900 lb dry, ~6,600 lb loaded

I have snipped the stats on one of the larger mountain passes we travel below—I will hit the derate message for oil temps (130 C) during the ascent, and I currently follow @VernDiesel advice of keeping <3,000 RPMs and the speed ends up in the 60-70 kmh range.

Slope Rectangle Plot Font Magenta

Looking for some additional input/feedback on potential improvements with helping keep the oil temperatures down. Here is what I am thinking and have gleaned from other forum members (@Bounty Hunter, @Brokedownbutgood - always appreciate your contributions to the forum)

Any additional thoughts, feedback, and suggestions would be appreciated.
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Ive tried multiple setups over the years including external oil coolers. For me the best setup so far is a free flowing grill with a lower temp thermostat and large aluminum radiator. The external oil coolers work well but add potenial leak points and can make it hard to warm up without added thermostat. They also make oil changes a pain if your like me and want all the oil out I can. Hopefully I well be pushing mine somewhat hard this weekend and see how it does with temps around 90 F.
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I have seen through other threads the radiator you have--looks like a sweet set-up. What lower temp thermostat are you using? I would like to source one, however the only one I can find is the GDE 88 C thermostat (which requires their most-current tune option).
The only lower temp thermostat I was able to find is from GDE. So I switched to there current tune for a while.
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What was the largest oil cooler you used?

130,000+ miles on my oil cooler setup and it's been great. 30' toy hauler averages #8k
Exact same cooler you have now just from a different source. Mounted mine behind the bumper and cut an opening in the bumper for air flow. It cooled great but warmed up slow and I hated the hoses.
I've had no hose issues, and warms up great with the oil thermostat. Wouldn't run one without the stat.
Tried with and without a oil thermostat it warmed up quicker with but oil changes sucked and it doubled the hose mess. Managing air flow worked almost as well some custom shutters would have made a huge difference but cost and time were not worth it.
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