Towing with a DPF equiped VAG car

[mark wade]

Hi all,


I have a question for those that are 'in the know'. I tow a caravan with my 2007 Golf TDi 170, it is equiped with a DPF and 'touch wood' all is well. Due to the cost of a replacement DPF I am constantly trying to give it an easier life as possible whilst towing. My question is, at cruising speed of 60mph is it better to leave the car in 5th gear @ 2000 revs which roughly coresponds to max torque or use 6th gear @ approx 1600 revs, still pulls OK on a flat surface but below max torque. I have used both gears on a flat stretch of road with the cruise control engaged and there is very little difference in fuel economy. What I would like to know is which gear will give the DPF an easier time regarding higher DPF temperature (which is good) verses higher soot production (which is bad) All info will be greatfully received.

Mark.

PS I have also posted this thread on other model related forums which might contain more traditional towcars.

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