Engine Oil Specifications for Diesel Vans Explained
Getting oil wrong on a modern diesel van damages the DPF permanently. What low SAPS means, how to read the approvals, and why viscosity is not the whole story.
Van repair, diagnostics and maintenance guides for UK van owners
Getting oil wrong on a modern diesel van damages the DPF permanently. What low SAPS means, how to read the approvals, and why viscosity is not the whole story.
The fault that never happens at the garage. How to record the pattern properly, use freeze frame data, and stop paying for repeated speculative repairs.
A working van almost certainly qualifies for the severe usage schedule, which most owners never realise. What matters most, and what you can check yourself.
Cheap readers show engine codes and little else. What live data, actuator tests and module access actually get you, and how much capability you need.
Automatic transmission faults usually trace back to fluid. Why condition matters so much, what limp mode means, and why an early fluid change beats a rebuild.
Manufacturers describe gearbox oil as fill for life. On a van doing high mileage under load, that claim is worth examining rather than accepting.
Poor shift quality is usually the linkage, not the box. Worn bushes and stretched cables cost little to fix and get misdiagnosed as expensive gearbox wear.
Whine, crunch and jumping out are three different faults with three different causes. How to tell them apart, and why the clutch is often the real culprit.
Coolant does more than stop freezing, and the corrosion inhibitors are the part that matters. Why mixing types and topping up with water cause real damage.
Overheating in traffic but fine at speed points straight at the fan. How to test the circuit properly, including the air conditioning trick that isolates it.