rayggb wrote:
Gave it a blast down the motorway last night and and it's disappeared today but I haven't done many miles today.wonder if it's because I put Sainsbury's diesel in the other day rather than the usual shell.
Have a bottle of DPF cleaner in the boot in case my light comes on - as the miles pile on it seems that the DPF will get clogged more easily, and more difficult to unclog.
The cleaner apparently helps the declogging process, in conjunction with a motorway blast, or as a precaution you can put a bottle in your tank once a month or so, which will apparently help prevent it clogging up.
Halfords seems to shift mostly Wynn's, which costs £10:
https://www.halfords.com/motoring/engin ... aner-325mlThe also do Redex for the same price:
https://www.halfords.com/motoring/engin ... aner-250mlTesco also sell the Redex stuff (bigger branches only, presumably) for £8.
My local Morrison's also sells one for £5.50 or thereabouts, but it's not one of the bigger brands (CarLube, or something, I think).
Of course, Shell V-Power or BP Ultimate diesel may do the same job, but there's so many opinions and unknowables about these things that to a degree it's all in the lap of the gods.
And as my light has never actually come on I've never used the stuff, but just put it in the boot for peace of mind, because of course if you read the reviews etc online there's always someone who claims that using such stuff has caused other problems.
But had a bit of a panic the other week when thought my VW was going through the *active* regeneration process (ie when extra fuel is squirted into the system to raise the temperature and burn the soot off) every other day rather than every couple of weeks or so (although it's difficult to tell when it's *actively* regenerating). So as car nearly round the clock thought that was maybe a sign that I was about to start having DPF problems, but think it was a false alarm.
By the way, the instructions on the Redex bottle don't mention routine use as a precaution, and give the impression that it's only for use if the warning light comes on. But I'm pretty sure it's the same stuff as here, which says it can be used on a routine basis every few tankfuls:
https://www.holtsauto.com/redex/product ... f-cleaner/Of course, have known about DPF problems for years now, but only just realised that it's such a 'thing' that a medium-sized branch of Morrison's stocks DPF cleaner