Auto Questions

[mcrews]

I agree with NOT turning the engine off at anytime. (imho)

[Arragonis]

So assuming I keep the engine on all the time I'm ok to shift into "N" and coast, the gearbox is lubricated by the engine ??

[RedDevil]

I doubt if the gearbox really needs it, but would do that just for the sake of the turbo.

I mean, if it is OK to tow the car for just under 50 miles at just under 50 mph, how could a EOC of half a minute or so possibly damage it?
The initial speed may be slightly higher than 50 mph, but that won't matter THAT much, right?
OTOH, I won't help you out if you void your warranty this way, sorry

[Arragonis]

Thanks, but forget the turbo - I understand that. Also forget what I posted earlier about towing.

OK - assume the following scenario. I'm coasting downhill, the engine is ON.

1. Am I ok to select N at that point ?

2. If the engine is ON is the gearbox being lubricated ?

There are places I can get a load of coast-miles even with the engine idling, which I need anyway for brakes, ESP, steering etc.

[user removed]

I think the transmission is a dual clutch 6 speed automated manual. If so I have been neutral coasting in my Fiesta (same type of transmission) with no issues whatsoever for over 16K miles. I would never attempt to coast with the engine off. I have heard real horror stories about people who tried that and since my car was a salvage rebuild there is no warranty om anything.

I have not really taken the time to read the specifics about the type of transmission in my car, which I think is similar to yours. I do know when I coast in neutral I can feel the tranmission downshifting as my speed drops below the lowest speed for the higher gears, although the clutch is disengaged.

My car also has throttle by wire, and there is no drama whatsoever shifting back into gear. I have done this at speeds as high as 70 MPH without any problem and I will continue to drive this way.

Bottom line is if your Audi is the DSG type automated 6 speed, then it would be worth it to try neutral coasting. I would leave the engine running though. I think the clutches are activated hydraulically and they would need engine power to maintain the fluid pressure.

I can't speak for your Audi, but you may notice the transmission downshifting as you slow down, so it can't really be in neutral, just the clutch is disengaged. Of course that is assuming your Audi functions basically the same as my Fiesta.

regards
Mech

[Arragonis]

Originally Posted by Old Mechanic

I think the transmission is a dual clutch 6 speed automated manual...

No it isn't. No. Nada. Nope. Nnnngaaaa.

Please please everyone - IT ISN'T A DSG Just to repeat :

IT ISN'T A DSG

As I typed earlier, Audi have 3 (auto) trans types:

S-tronic = DSG
Multitronic = CVT
Tiptronic = 6sp Auto with flappy paddles.

Mine is the last one.

It is a conventional Auto.

My question is a simple one, I think

[user removed]

I have used the same technique with all 3 types, give it a try.

regards
Mech

[Arragonis]

So coasting in N with the engine idling means the gearbox is ok ?

[mcrews]

Originally Posted by Arragonis

So coasting in N with the engine idling means the gearbox is ok ?

Correct!

[LeanBurn]

Simply look up if the car can be flat towed. If it can or can't you have your answer.