Cross Country Trip - Thoughts, Observations, and MPG
12-23-14, 10:54 AM
#17
The pursuit of F
This is hard to explain - Im not a sports car expert!
The ride is very nice, but more aggressive and sport feeling than any SUV/CUV that I have ever owned (I have had Jeep Grand Cherokees,Tahoes, Explorer, Touareg).
I have All season tires on the NX and its AWD. My IS 350 has low profile summer tires as I'm sure many do, and is Rear wheel drive. The IS 350 is firmer than the NX, you feel the road more in the IS. I have a feeling of being More in control in the IS 350. That's not to say I don't feel in control in the NX. You just feel more ("become one with the car and road and curves and driving") in the Is 350, but you know that "zen" potential is there to some level in the NX with the cockpit and turbo engine and wrap around seat and sporty steering wheel with paddle shifters .
The NX does have a sporty ride (much firmer than the previous '14 Jeep Grand Cherokee Summit which was fantastic luxury/technology but also lots of bugs and issues) but it rides down the road nicely and can get sporty if you put your foot into it.
Noise level: I hear the road a lot more in the IS 350. Closer / lower to the road and summer tires. NX is quiet really!
So long way to say IS is firmer than NX. NX is firmer than any other SUV I've owned. The NX is a really nice riding sporty SUV with a sinister side if you want to bring it out!
The ride is very nice, but more aggressive and sport feeling than any SUV/CUV that I have ever owned (I have had Jeep Grand Cherokees,Tahoes, Explorer, Touareg).
I have All season tires on the NX and its AWD. My IS 350 has low profile summer tires as I'm sure many do, and is Rear wheel drive. The IS 350 is firmer than the NX, you feel the road more in the IS. I have a feeling of being More in control in the IS 350. That's not to say I don't feel in control in the NX. You just feel more ("become one with the car and road and curves and driving") in the Is 350, but you know that "zen" potential is there to some level in the NX with the cockpit and turbo engine and wrap around seat and sporty steering wheel with paddle shifters .
The NX does have a sporty ride (much firmer than the previous '14 Jeep Grand Cherokee Summit which was fantastic luxury/technology but also lots of bugs and issues) but it rides down the road nicely and can get sporty if you put your foot into it.
Noise level: I hear the road a lot more in the IS 350. Closer / lower to the road and summer tires. NX is quiet really!
So long way to say IS is firmer than NX. NX is firmer than any other SUV I've owned. The NX is a really nice riding sporty SUV with a sinister side if you want to bring it out!
12-23-14, 11:03 AM
#18
Lexus Test Driver
12-23-14, 11:59 AM
#19
Driver
Thread Starter
12-23-14, 12:07 PM
#20
12-23-14, 12:29 PM
#21
Driver
Thread Starter
12-23-14, 12:55 PM
#22
Rookie
Join Date: Oct 2014
Location: Western WA
Posts: 65
Likes: 0
Received 0 Likes
on
0 Posts
My dealer did not mention this either. I had no idea turbo needed cool down till I read the thread on this forum.
12-23-14, 01:17 PM
#23
The pursuit of F
^^^ Didn't know either. Thanks! I'll be sure to check the manual in a week, if there are any differences in operation for Canada (like there is the maintenance schedule).
12-23-14, 01:36 PM
#24
Just from a realistic sense, is anybody actually going to do this? I've never done this with my turbo... Does any other maker currently require this?
12-24-14, 09:47 AM
#25
Instructor
Copied from skeptics.stackexchange.com
According to a major manufacturer of turbochargers
Following a hot shutdown of a turbocharger, heat soak begins. This means that the heat in the head, exhaust manifold, and turbine housing finds it way to the turbo’s center housing, raising its temperature. These extreme temperatures in the center housing can result in oil coking.
To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off.
Conclusion:
No, there is no need to run a turbocharged engine after stopping the vehicle - unless you have an older vehicle with an early type of turbocharger and have been pushing the engine to it's limits for an extended time. Check the owner-manual for your car to see if the manufacturer recommends any special procedure, if it doesn't you can assume none is needed.
If I had an NX, I would not do anything differently during normal driving.
Ray A.
According to a major manufacturer of turbochargers
Following a hot shutdown of a turbocharger, heat soak begins. This means that the heat in the head, exhaust manifold, and turbine housing finds it way to the turbo’s center housing, raising its temperature. These extreme temperatures in the center housing can result in oil coking.
To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off.
Conclusion:
No, there is no need to run a turbocharged engine after stopping the vehicle - unless you have an older vehicle with an early type of turbocharger and have been pushing the engine to it's limits for an extended time. Check the owner-manual for your car to see if the manufacturer recommends any special procedure, if it doesn't you can assume none is needed.
If I had an NX, I would not do anything differently during normal driving.
Ray A.
Last edited by raylor4; 12-24-14 at 09:48 AM. Reason: Grammar
12-24-14, 01:08 PM
#26
Driver School Candidate
Join Date: Dec 2014
Location: MB
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
Copied from skeptics.stackexchange.com
According to a major manufacturer of turbochargers
Following a hot shutdown of a turbocharger, heat soak begins. This means that the heat in the head, exhaust manifold, and turbine housing finds it way to the turbo’s center housing, raising its temperature. These extreme temperatures in the center housing can result in oil coking.
To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off.
Conclusion:
No, there is no need to run a turbocharged engine after stopping the vehicle - unless you have an older vehicle with an early type of turbocharger and have been pushing the engine to it's limits for an extended time. Check the owner-manual for your car to see if the manufacturer recommends any special procedure, if it doesn't you can assume none is needed.
If I had an NX, I would not do anything differently during normal driving.
Ray A.
According to a major manufacturer of turbochargers
Following a hot shutdown of a turbocharger, heat soak begins. This means that the heat in the head, exhaust manifold, and turbine housing finds it way to the turbo’s center housing, raising its temperature. These extreme temperatures in the center housing can result in oil coking.
To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off.
Conclusion:
No, there is no need to run a turbocharged engine after stopping the vehicle - unless you have an older vehicle with an early type of turbocharger and have been pushing the engine to it's limits for an extended time. Check the owner-manual for your car to see if the manufacturer recommends any special procedure, if it doesn't you can assume none is needed.
If I had an NX, I would not do anything differently during normal driving.
Ray A.
12-25-14, 10:53 PM
#27
Noise level: I hear the road a lot more in the IS 350. Closer / lower to the road and summer tires. NX is quiet really!
So long way to say IS is firmer than NX. NX is firmer than any other SUV I've owned. The NX is a really nice riding sporty SUV with a sinister side if you want to bring it out!
Let us know your first gas tank mpg back at home, compared to your own IS350 on the same roads...
Thread
Thread Starter
Forum
Replies
Last Post
BottomsUp
IS - 2nd Gen (2006-2013)
8
10-11-06 09:30 AM
