Car Mechanics (UK) - - Your Letters - Tony Pow­ell

I was dis­ap­pointed that a month after the ex­cel­lent ar­ti­cle on DPF clean­ing (Main­tain­ing & re­pair­ing cat­alytic con­vert­ers & par­tic­u­late fil­ters, CM, Fe­bru­ary 2018), Steve Roth­well in Tales from the Work­shop changed a DPF that was sal­vage­able. Even if a DPF is com­pletely blocked, it can still be res­ur­rected. As a mem­ber of the DPF Doc­tor group, the or­gan­i­sa­tion has saved hun­dreds of DPFS for cus­tomers. Nor­mally, DPFS only need chang­ing if they are phys­i­cally dam­aged, al­though it is quite com­mon to come across a DPF so blocked that the ve­hi­cle will not even run or even start. The chem­i­cals we use dis­solve the block­age and al­low ex­haust gas to es­cape, which then car­ries the chem­i­cals fur­ther into the DPF, clean­ing out the rest of it. We are so con­fi­dent of our sys­tem that we can of­fer a ‘no clean, no fee’ ser­vice.

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