I drove a 2025 Ram 1500 Lone Star (Big Horn) today with the 3.0 SST standard output. The engine was very smooth and had a nice progression of power and torque. I had been concerned with how much heat build-up there would be in the engine bay on the driver's side with both turbos and catalytic converters tuck together on that side of the engine. When I pulled off the highway and directly into the dealer's lot, I popped the hood to check for heat buildup. There was no felt temperature difference between either side of the engine bay. I could stick my hand down by the turbos an not feel penetrating heat like I do with my V8 exhaust manifold. The turbos and CATs are very well insulated. My questions are.
There was a small 12 battery that looked like a motorcycle battery just aft of the primary battery. Does anyone know what its purpose is for? I could find no reference to it in the owner's manual.
The SST had a secondary cooling system for the turbos and I believe the intercooler(s). Does anyone have any info on that system and why the compressed air off the turbo's would be liquid cooled instead of air? (I've had 5 turbo vehicles so I am familiar with the turbo machinery) Again, not much info in the owner's manual except it takes 4 quarts. I couldn't find the heat exchanger for it.
Thanks in advance for any intel you can provide.
There was a small 12 battery that looked like a motorcycle battery just aft of the primary battery. Does anyone know what its purpose is for? I could find no reference to it in the owner's manual.
The SST had a secondary cooling system for the turbos and I believe the intercooler(s). Does anyone have any info on that system and why the compressed air off the turbo's would be liquid cooled instead of air? (I've had 5 turbo vehicles so I am familiar with the turbo machinery) Again, not much info in the owner's manual except it takes 4 quarts. I couldn't find the heat exchanger for it.
Thanks in advance for any intel you can provide.
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