wasinger3000
New member
Are there any additives that will help prevent oil degradation in the PTU?
Is there a temp sensor for the PTU?
Is there a temp sensor for the PTU?
Power Transfer Unit (PTU) Equipped Vehicles*** READ THIS
- Thread starter Spartn27
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IHeartGroceries
New member
Yeah, VI improvers are added to base stock oils by the manufacturer. I think the design of the PTU is what needs improvement. It is delivering torque to the front axles and the the rear driveshaft continuously of a 4500 lb car, using only a pint or whatever ridiculous capacity of oil. What remains to be seen I think is the effect on oil longevity with auxiliary water cooling equipped on interceptors and PP trim SHOs vs. non-cooled. Water cooling isn't even necessity. If you've got decent capacity, you can rely on a cooler, or even just cooling vanes on the housing to keep things cool. I've heard it's a headache to add the aux water cooling after-the-fact. Maybe it'd be easier to plumb in an inductive auxiliary oil cooler/radiator?
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There is a procedure for the 13+ PP cars with liquid cooling. There is a fill and drain plug. According to the shop manual you have to remove the passenger cat to access the fill plug. I have yet to try this. I'm going to attempt it this weekend.
I have seen in FORScan the PID for the PTU temp gauge and the Lube life monitor (only available on 13+ PP) . I am still working on the equation for Torque Pro.
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I have seen in FORScan the PID for the PTU temp gauge and the Lube life monitor (only available on 13+ PP) . I am still working on the equation for Torque Pro.
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wasinger3000
New member
Hah. Sounds like a good time. Does it display any warning light? Or are we just left to figure it out on our own?jmr061 said:
wasinger3000
New member
Would the non PP guys be able to use a PID for the temp?ShoBoat said:
ecoboostsho
New member
Nope...there isn't a sensor to even read the temperature. I have a 2011 PP and it doesn't have a sensor either. The cooling and temp sensor was only added to the 2013+ PPwasinger3000 said:
wasinger3000
New member
Lovely.... is it that much to as for a temp sensor in for something so fragile yet important.ecoboostsho said:
I wonder if they would deny a warranty claim on this part if they dig to see if it has been tuned.
wasinger3000
New member
I'm going to poke around with FORScan tonight and see. I might need some help finding it but I'll let you know when I try tonight.
I took a look and in several places the 2013 Service Manual states "if equipped" when referring to the PTU temp sensor. I believe it only exists if the car has a PTU cooling system.
I did see this in the service manual as well:
"Heat Protection Mode
During very extreme off-road operation, the AWD system utilizes a heat protection mode to protect the ATC solenoid (part of rear axle) from damage. If the system detects an overheat condition, it enters a locked mode. If the heat in the system continues to rise once in the locked mode, the 4X4 control module disables the ATC solenoid. Allow the system to cool down at least 10 minutes with the ignition switch in the ON position. "
I did see this in the service manual as well:
"Heat Protection Mode
During very extreme off-road operation, the AWD system utilizes a heat protection mode to protect the ATC solenoid (part of rear axle) from damage. If the system detects an overheat condition, it enters a locked mode. If the heat in the system continues to rise once in the locked mode, the 4X4 control module disables the ATC solenoid. Allow the system to cool down at least 10 minutes with the ignition switch in the ON position. "
ecoboostsho
New member
I think there is only thermal protection on the 2013 + cooled units...aka PP. Not positive though and would be happy to be proved wrong!
ecoboostsho said:
Thermal protection and a cooler for the fluid would be nice but honestly the best form of preventative maintenance would be to spend $100 a year on a high quality fluid swap. For a measly $100 or less a year you can have fresh, high quality gear oil and the peace of mind that comes along with it. Not to mention not only will your car perform better but <$100 is a lot better than $1,000+ for a new PTU.
wasinger3000
New member
How often are we thinking the oil should be changed? I'm quite hard on my car. Lots of data logs back to back at wot ect... I'm going to change mine tonight and see how degraded the oil is.
