Dos and don'ts to diesel engine.

[jctee]

Thanks to all - very helpful tips/info. As the Tig is my first diesel, I'm keen to learn.

[Idle]

Roll starting may be hard on the transmission due to the high compression ratio since the passenger car diesels often use the same drive train as their petrol brethren.

Not really — you do the same thing every time you lift your foot off the loud pedal.

Think about it...

[jctee]

One more thing !! - I see there are some threads about using diesel additives - some every tank, and some every 5000k.

Is there any preference/brands for my 2010 103 DSG Tiguan ?

[jctee]

One more thing !! - I see there are some threads about using diesel additives - some every tank, and some every 5000k.

Is there any preference/brands for my 2010 103 DSG Tiguan ?

[Greg Roles]

I like Fuel Doctor from supercheap because it is a groovy green colour.

[Transporter]

One more thing !! - I see there are some threads about using diesel additives - some every tank, and some every 5000k.

Is there any preference/brands for my 2010 103 DSG Tiguan ?

I used Fuel Doctor couple times in our Tiguan, but every oil change I use Wurth CRD Additive.

You can also use Moreys Diesel Smoke Killer I just found from their website that it is now suitable for DPF. http://www.moreys.co.nz/details.php?...11&productID=2

[Preen59]

Great thread.

I like Fuel Doctor from supercheap because it is a groovy green colour.

You never cease to amuse me, Greg. hahaha.

[kaanage]

Not really — you do the same thing every time you lift your foot off the loud pedal.

Think about it...

I have and it isn't.

Roll starting either requires a sudden sharp load as the clutch is dropped while the car is moving, forcing compression cycles from a standstill or a fade in of the clutch until compression is just overcome. All is this is harder than full engine braking when the engine is already running as you have the inertia to overcome which adds to the shock loading on the transmission components.

[rogerd63]

Hi I just read in the does and donts from the link about contamination in the oil of a diesel. I always start my T5 1.9 in the morning and let it idle/warm up while i get my stuff ready to head off to work.Probably 3 to 4 mins. I figuired this was a good thing instead of heading off on a cold motor.
Any thoughts on this? Ps i also let the car idle for a few mins before i turn it off to let it cool the turbo a bit.?

Just interested on others thoughts.

[Greg Roles]

At idle, a diesel's exhaust is flat out achieveing 100 degrees! As such it will take FAR longer to warm up by idling, and the engine adds pure exhaust to the intake via the EGR to try and help speed up the process - this switches off when the coolant hits about 40 degrees from memory. Just my opinion, but it's far better to drive it to warm it up, quietly at first, but in my measuring of oil temps, it takes a fraction of the time to reach oil temps by driving as compared to idling.

Letting it idle down isn't a bad idea, but again, I just drive it quietly for the few minutes before stopping.